Que- Molecular formula of chlorophyll b is_____________?
a. C55 H10 O4 N6 Mg
b. C55 H70 O6 N5 Mg
c. C55 H71 O6 N4 Mg
d. C55 H70 O6 N4 Mg
Answer- C55 H70 O6 N5 Mg
Que- Which of the following is a compensation point:
a. Leaves respire and utilize O2 and release CO2.
b. Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.
c. Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.
d. Rate of respiration becomes more than rate of photosynthesis.
Answer- Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.
Que- Quantitative study of energy relationships in biological systems obeys.
a. Bioenergetics
b. Laws of thermodynamics
c. Laws of thermo chemistry
d. Laws of chemical energetic
Answer- Laws of thermodynamics
Que- The organisms able to use sunlight directly as a source of energy are_____________?
a. Plants
b. Animals
c. Omnivores
d. Fungi
Answer- Plants
Que- Carotenoids perform protective function in_____________?
a. Animals
b. Plants
c. Both of these
d. None of these
Answer- Both of these
Que- Of the following which one is not an energy releasing process?
a. Glycolysis
b. Respiration
c. Photosynthesis
d. Kreb's cycle
Answer- Photosynthesis
Que- About __________ % of photosynthesis is carried by terrestrial plants, while rest occurs in ocean, lakes, and ponds?
a. 0.1
b. 0.2
c. 0.3
d. 0.4
Answer- 0.1
Que- Net yield of H2O in Photosynthesis is__________?
a. 1 molecule
b. 6 molecules
c. 3 molecules
d. 0 molecule
Answer- 0 molecule
Que- The point at which there is no net exchange of gases between leaves and atmosphere is known as_____________?
a. Neutral point
b. Compensation point
c. Parallel point
d. Competitive point
Answer- Compensation point
Que- Air contains __________ % of CO2 ?
a. 0.02-0.03
b. 0.03-0.04
c. 0.04-0.05
d. 0.05-0.06
Answer- 0.03-0.04
Que- Van neil hypothesis about the production of oxygen during phosynthesis was based on the study and investigations on___________?
a. Bacteria
b. Algae
c. Protenema
d. Cyanobacteria
Answer- Bacteria
Que- PS I has chlorophyll a molecule which absorbs maximum light of _________ nm ?
a. 600.0
b. 650.0
c. 680.0
d. 700.0
Answer- 700.0
Que- Visible light used in photosynthesis ranges from:__________?
a. 300 – 700 nm in wavelength
b. 350 – 750 nm in wavelength
c. 380 – 750 nm in wavelength
d. 390 – 790 nm in wavelength.
Answer- 380 – 750 nm in wavelength
Que- The percentage of light absorbed by the leaf is ___________?
a. 0.2
b. 0.15
c. 0.1
d. 0.01
Answer- 0.01
Que- Which of the following light is least absorbed by the plants?
a. Orange
b. Red
c. Blue
d. Green
Answer- Green
Que- The first action spectrum was obtained by___________?
a. T.W.Englemam
b. Malleus
c. T.W.Inws
d. W.Stapes
Answer- T.W.Englemam
Que- Which of the light is mainly absorbed by the plants?
a. Orange
b. Red
c. Green
d. Both A and B
Answer- Both A and B
Que- First Actions spectrum was obtained by using__________?
a. Algae
b. Fungi
c. Bacteria
d. Spirogyra
Answer- Spirogyra
Que- Chlorophyll is insoluble in_____________?
a. Carbon tetrachloride
b. Alcohol
c. Organic solvents
d. Water
Answer- Water
Que- Of the following, which one causes higher production of food in green plants?
a. Blue
b. Orange
c. Red
d. Violet
Answer- Red
Que- Which of the following statement about the head of a chlorophyll molecule is incorrect?
a. It is a porphyrin ring or tetrapyrrole ring structure
b. It is flat, square and light absorbing
c. Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen.
d. It is hydrophobic
Answer- It is hydrophobic
Que- Photosynthesis carried out by terrestrial plants is _________ of total photosynthesis?
a. 1-2%
b. 0.05
c. 0.1
d. 0.2
Answer- 0.1
Que- Molecular formula of chlorophyll 'a' molecule is___________?
a. C55H72O5N4Mg
b. C55H70O6N4Mg
c. C50H72O6N4Mg
d. C55H70O5N4Mg
Answer- C55H72O5N4Mg
Que- Stomata cover only ______________ of leaf surface?
a. 0.03 – 0.04%
b. 0.1
c. 1-2 %
d. 0.5
Answer- 1-2 %
Que- Which of the following pigment is Blue- green in colour?
a. Chlorophyll a
b. Chlorophyll b.
c. Chlorophyll c
d. Chlorophyll d.
Answer- Chlorophyll a
Que- Reduction in photosynthesis is of____________?
a. O2
b. CO2
c. H2O
d. light energy
Answer- CO2
Que- Complete breakdown of glucose molecule takes place in which of the following?
a. Alcoholic fermentation
b. Lactic acid fermentation
c. Aerobic respiration
d. All of these
Answer- Aerobic respiration
Que- Chlorophylls mainly absorb _________ wavelengths?
a. Orange – blue
b. Violet – red
c. Yellow – orange
d. Orange – red.
Answer- Orange – red.
Que- Deficiency of ___________ causes yellowing in plants?
a. Magnesium
b. Iron
c. Chlorine
d. Oxygen
Answer- Magnesium
Que- In alcoholic fermentation Pyruvic acid is broken down into?
a. Acetaldehyde
b. Methyl alcohol
c. Ethyl alcohol
d. Lactic acid
Answer- Ethyl alcohol
Que- The chlorophyll molecule is embedded in the core of thylakoid membrane which acts as___________?
a. Hydrophilic
b. Hydrophobic
c. Both of these
d. None of these
Answer- Hydrophobic
Que- The most important photosynthetic pigment is ___________?
a. Chlorophyll a
b. Chlorophyll b
c. Xanthophyll
d. Carotenes
Answer- Chlorophyll a
Que- In which of the following component of the body, lactic acid fermentation takes place?
a. Brain
b. Heart
c. Liver
d. Muscles
Answer- Muscles
Que- Final acceptor of electrons in respiratory chain is____________?
a. NADH
b. Cytochrome a3
c. Water
d. Oxygen
Answer- Oxygen
Que- In Anaerobic respiration only __________ % of the energy present within the chemical bond of glucose is converted into ATP?
a. 0.01
b. 0.02
c. 0.03
d. 0.04
Answer- 0.02
Que- From one pyruvate passing through Kreb's cycle, how many NADH are formed?
a. 1.0
b. 2.0
c. 3.0
d. 4.0
Answer- 3.0
Que- Cellular respiration is essentially a/an _____________ process?
a. Oxidation.
b. Reduction.
c. Redox.
d. None of the above.
Answer- Oxidation.
Que- ATP are consumed during___________?
a. Glycolysis
b. Kreb's cycle
c. Light dependent phase
d. none of these
Answer- Glycolysis
Que- Breaking of terminal phosphate of ATP releases about ___________ Kcal of energy?
a. 6.1
b. 6.3
c. 7.1
d. 7.3
Answer- 7.3
Que- Functional units of lungs are called________?
a. Alveoli
b. Air sacs
c. Parabronchi
d. None of these
Answer- Air sacs
Que- Lungs are spongy due to the presence of million of___________?
a. Air sacs
b. Alveoli
c. Bronchioles
d. Parabronchi
Answer- Alveoli
Que- ___________ respiration is directly involved in the production of energy, necessary for all living activities?
a. Organismic
b. Cellular
c. Both of these
d. None of these
Answer- Cellular
Que- Lungs are covered with double layered thin membranous sac called___________?
a. Disphragm
b. Pleura
c. Pericardium
d. Rib cage
Answer- Pleura
Que- ___________ respiration is the process by which cell utilized oxygen and produces CO2 ?
a. Cellular
b. Organismic
c. Both of these
d. None of these
Answer- Cellular
Que- During rest the breathing occurs rhythmically at the frequency of _________ times per minute in human?
a. 16-30
b. 15-20
c. 5?10
d. 6?12
Answer- 15-20
Que- Of the following, which one is better respiratory medium___________?
a. Air
b. Water
c. Soil
d. None of these
Answer- Air
Que- The maximum amount of oxygen which normal human blood absorbs and carries at sea level is ________ per 100 ml of blood.
a. 10 ml
b. 20 ml
c. 30 ml
d. 40 ml
Answer- 20 ml
Que- Oxygen contents per liter of air is____________?
a. 10 ml
b. 100 ml
c. 200 ml
d. 100ml
Answer- 200 ml
Que- Haemoglobin can be almost completely oxygenated by an oxygen pressure of __________ of mercury.
a. 10 mm
b. 60 mm
c. 10 cm
d. 100 mm
Answer- 100 mm
Que- Water is _________ times viscous than air?
a. 50.0
b. 1000.0
c. 5000.0
d. 8000.0
Answer- 50.0
Que- Important factors which affect the capacity of haemoglobin to combine with oxygen is
a. Temperature
b. Carbon dioxide
c. pH
d. All of these
Answer- All of these
Que- There are _________ stomata per square cm of leaf surface in Tobacco plants?
a. 1200.0
b. 12000.0
c. 100000.0
d. 1000.0
Answer- 100000.0
Que- The air spaces may comprise upto _________ of total volume of leaf surface?
a. 0.3
b. 0.2
c. 0.4
d. 0.5
Answer- 0.4
Que- The glycolate produced diffuses into the membrane bounded organelles called____________?
a. Glyoxisomes
b. Peroxisomes
c. Lysosomes
d. Mitochondria
Answer- Peroxisomes
Que- The increase in pH of blood has ________ effect on the oxygen carrying capacity of haemogolobin?
a. plus ve
b. – ve
c. No
d. All of these
Answer- plus ve
Que- Percentage of CO2 carried as carboxyhaemoglobin is_________?
a. 0.05
b. 0.7
c. 0.2
d. 0.1
Answer- 0.2
Que- Arterial blood contains _________ of CO2 per 100 ml of blood
a. 54 ml
b. 60 ml
c. 64 ml
d. 50 ml
Answer- 50 ml
Que- Active site of Rubisco is evolved to bind?
a. CO2
b. O2
c. H2O
d. All of these
Answer- All of these
Que- More than ___________ compounds of tar of tobacco smoke are involved to cause cancer?
a. 5.0
b. 90.0
c. 15.0
d. 10.0
Answer- 10.0
Que- A disease of longs in which inside of the lungs is damaged resulting in cough and fever?
a. Lung cancer
b. Asthma
c. Emphysema
d. Pulmonary tuberculosis
Answer- Emphysema
Que- Number of spiracles present in cockroach is___________?
a. 15.0
b. 10.0
c. 20.0
d. 30.0
Answer- 20.0
Que- Of the following, which one is a contagious disease?
a. Tuberculosis
b. Lungs cancer
c. Asthma
d. Emphysema
Answer- Tuberculosis
Que- Number of spiracles present in the thorax of cockroach is___________?
a. 2.0
b. 3.0
c. 5.0
d. 4.0
Answer- 4.0
Que- Which of the following promotes growth in plants?
a. Photorespiration
b. Calvin cycle
c. Both of these
d. None of these
Answer- Calvin cycle
Que- When abdomen expands, the number of spiracles open is_____________?
a. 2.0
b. 3.0
c. 6.0
d. 8.0
Answer- 8.0
Que- Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?
a. Cockroach
b. Earthworm
c. Aves
d. Frogs
Answer- Aves
Que- The blood enters the ________________ side of heart ?
a. Posterior
b. Anterior
c. Lateral
d. All possible
Answer- Posterior
Que- Voice box is another name used for___________?
a. Buccal cavity
b. Pharynx
c. Larynx
d. Chest Cavity
Answer- Larynx
Que- All of the following contain cartilage except:___________?
a. Larynx
b. Trachea
c. Bronchi
d. Bronchioles
Answer- Bronchioles
Que- Gaseous exchange through the skin is known as ______________ respiration?
a. Cuticular
b. Cutaneous
c. Skin
d. Pulmonary
Answer- Cutaneous
Que- Respiratory distress syndrome is common especially for infants with a__________?
a. Less than 7 month
b. Less than 8 month
c. Less than 9 month
d. More than 9 month
Answer- Less than 7 month
Que- Parabronchi are open at ______________ end/s?
a. Single
b. Both
c. Do not have opening
d. None of these
Answer- Both
Que- In most birds air sacs are ____________ in number?
a. 10.0
b. 3.0
c. 4.0
d. 9.0
Answer- 9.0
Que- Vocal cords are stretched across_______?
a. Larynx
b. Pharynx
c. Golttis
d. None of these
Answer- Golttis
Que- A joint formed between humerus, radius and ulna is an example of__________?
a. Immovable joint.
b. Slightly movable joint.
c. Freely movable joint.
d. Fibrous joint
Answer- Freely movable joint.
Que- Which of the following plays the major role in providing support to young herbaceous parts of the plant?
a. Living cells of epidermis with higher turgor pressure.
b. Living cells of cortex and pith with higher turgor pressure.
c. Collenchyma cells
d. All of these
Answer- All of these
Que- Joint between two parietal bones, which is infact immovable one is an example of_________?
a. Fibrous joints.
b. Cartilaginous joints.
c. Synovial joints.
d. None of these
Answer- Fibrous joints.
Que- Fibrous capsule surrounding synovial joints may be thickened at some places to form:
a. Synovial membrane.
b. Ligaments.
c. Muscles.
d. Tendon
Answer- Ligaments.
Que- Higher turgor pressure in a plant cell is maintained by________________?
a. Large number of vacoules in a plant cell.
b. Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane
c. Higher osmotic pressure of the cell vacuole
d. both b and c
Answer- both b and c
Que- In which of the following joint muscles are arranged in the same plane as that of joint?
a. Between radius and ulna.
b. Between ulna and scapula
c. Between humerus and scapula
d. Between femur and tibia.
Answer- Between femur and tibia.
Que- Which of the following hormone is predominantly responsible for bone weakening in older women?
a. Progesterone.
b. Oestrogen.
c. Parathyroid hormone.
d. Calcitonin.
Answer- Oestrogen.
Que- Secondary cell wall of sclerenchyma cells is impregnated with_________________?
a. Cellulose.
b. Peptidoglycan and murein.
c. Lignin.
d. Pectin.
Answer- Lignin.
Que- Which of the follwing is a childhood disease resulting from nutritive Ca2+ deficiency?
a. Hypocalcaemia Tatanic spasms.
b. Osteomalacis.
c. Rickets.
d. Tetany
Answer- Rickets.
Que- Among the followings which is the most longest supportive cell?
a. Tracheids
b. Sclereids
c. Trachea
d. Collenchyma cells
Answer- Tracheids
Que- Which of the following statement about osteoporosis is incorrect.
a. It results from estrogen deficiency.
b. Bone eating process takes over bone formation process.
c. There is reduction of bone mass and change in chemical composition of the matrix
d. It is common in old age.
Answer- There is reduction of bone mass and change in chemical composition of the matrix
Que- An increrase in plant girth due to activity of _____________ is called secondary growth?
a. Cork cambium
b. Pith.
c. Vascular cambium.
d. Both a and c
Answer- Both a and c
Que- Which of the following statements about fractures in old age is incorrect?
a. They are more common than in adult age.
b. Occur as a result of bone being thin and weak.
c. Due to good blood supply it results in quick healing.
d. It involves osteoblasts and osteocytes.
Answer- Due to good blood supply it results in quick healing.
Que- If two ends of fractured bone are opened and kept united via screws and wires drilled in bone substance. This step in fracture repair is called___________?
a. Open reduction.
b. Closed Fixation.
c. Open fixation.
d. Immobilization
Answer- Open reduction.
Que- Vascular Cambium initially appears as actively dividing cells between_________________?
a. Primary Xylem and secondary xylem.
b. Primary xylem and secondary phloem.
c. Primary xylem and primary phloem
d. Secondary xylem and secondary phloem.
Answer- Primary xylem and primary phloem
Que- A fracture hematoma has____________?
a. Healing properties.
b. Destructive properties.
c. Neutralizing properties.
d. Dead cells
Answer- Dead cells
Que- Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of ____________?
a. Chemotropic movement
b. Chemotactic movement
c. Chemosastic movement
d. Haptonastic movement
Answer- Chemotactic movement
Que- Which of the following cells are involved in soft callus formation?
a. Fibroblast and osteoblast.
b. Osteoblast and osteoclast.
c. Osteoclast and osteocyte
d. Onteocyte and osteoblast
Answer- Fibroblast and osteoblast.
Que- Bony callus formation completes in___________?
a. 2-3 weeks
b. 3-4 weeks.
c. 2-3 months.
d. 3-4 months.
Answer- 2-3 months.
Que- The place of attachment of leaf with the shoot is called__________?
a. Pith.
b. Pit.
c. Pulvinus
d. Ecdysone
Answer- Pulvinus
Que- Which of the following is a uni-nucleated cell?
a. A smooth muscle cell.
b. A cardiac muscle cell.
c. A skeletal muscle cell.
d. All of these
Answer- A smooth muscle cell.
Que- Rapid movement of leaves of mimosa on touching is an example of _____________?
a. Turgor movement
b. Nastic movement
c. Tropic movements.
d. Growth movement
Answer- Turgor movement
Que- The contraction of which of the following muscle fibers, is controlled by hormones?
a. A smooth muscle
b. A cardiac muscle
c. A skeletal muscle.
d. All of these
Answer- A smooth muscle
Que- Roots of a plant show______________?
a. Positive phototropism and negative geotropism
b. Negative phototropism and positive geotropism
c. Negative tactic movement and positive tropic movement
d. Positive geotropism of stem and roots
Answer- Negative phototropism and positive geotropism
Que- Why skeletal muscles are called striated muscles?
a. They appear darker than smooth muscles by naked eye.
b. Alternating dark and light bands appear on their surface when visualized by naked eye.
c. Alternating dark and light bands appear on their surface when visualized via a microscope.
d. All of these
Answer- Alternating dark and light bands appear on their surface when visualized via a microscope.
Que- Epinasty is controlled by_____________?
a. Gibberellins
b. Abscisins
c. Auxins
d. Cytokinins
Answer- Auxins