Match the following genes of the Lac operon with their respective products:
(a) i gene (i) β-galactosidase
(b) z gene (ii) Permease
(c) a gene (iii) Repressor
(d) y gene (iv) Transacetylase
Select the correct option.
a.
(1) (iii)(iv) (i)(ii)
b.
(2) (i) (iii) (ii)(iv)
c.
(3) (iii) (i) (ii)(iv)
d.
(4) (iii) (i)(iv)(ii)
Correct Answer
Step-by-Step AI Explanation
Verified Method
In lac operon, i gene codes for the Repressor, z gene codes for β-galactosidase, y gene codes for Permease, and a gene codes for Transacetylase.
Q2mcq
Match the following structures with their respective location in organs:
(a) Crypts of Lieberkuhn (i) Pancreas
(b) Glisson's Capsule (ii) Duodenum
(c) Islets of Langerhans (iii) Small intestine
(d) Brunner's Glands (iv) Liver
Select the correct option from the following:
a.
(1) (iii) (ii) (i) (iv)
b.
(2) (iii) (i) (ii) (iv)
c.
(3) (ii) (iv) (i) (iii)
d.
(4) (iii) (iv) (i) (ii)
Correct Answer
Step-by-Step AI Explanation
Verified Method
Crypts of Lieberkuhn are in the small intestine, Glisson's capsule is in the liver, Islets of Langerhans are in the pancreas, and Brunner's glands are in the submucosa of the duodenum.
Q3mcq
What is the direction of movement of sugars in phloem?
a.
Bi-directional
Correct Answer
b.
Non-multidirectional
c.
Upward
d.
Downward
Step-by-Step AI Explanation
Verified Method
The movement of sugars in phloem is bi-directional because it depends on the source-sink relationship, which varies in plants.
Q4mcq
The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in:
a.
Bronchioles and Fallopian tubes
Correct Answer
b.
Bile duct and Bronchioles
c.
Fallopian tubes and Pancreatic duct
d.
Eustachian tube and Salivary duct
Step-by-Step AI Explanation
Verified Method
Ciliated epithelium is found in the inner surface of hollow organs like bronchioles and fallopian tubes to move mucus or ovum/embryo.
Q5mcq
Which of the following is the most important cause for animals and plants being driven to extinction?
a.
Alien species invasion
b.
Habitat loss and fragmentation
Correct Answer
c.
Drought and floods
d.
Economic exploitation
Step-by-Step AI Explanation
Verified Method
Habitat loss and fragmentation is identified as the primary cause of biodiversity loss and species extinction globally.
Q6mcq
Which of the following contraceptive methods do involve a role of hormone?
In lactational amenorrhoea, high prolactin levels suppress gonadotropins. Oral pills and emergency contraceptives rely on progestogen or estrogen-progestogen combinations.
Q6mcq
Which of the following contraceptive methods do involve a role of hormone?
Lactational amenorrhea depends on high prolactin levels affecting gonadotropins. Pills and emergency contraceptives use hormonal combinations (progestogens/estrogen).
Q7mcq
Which of the following pair of organelles does not contain DNA?
a.
Nuclear envelope and Mitochondria
b.
Mitochondria and Lysosomes
c.
Chloroplast and Vacuoles
d.
Lysosomes and Vacuoles
Correct Answer
Step-by-Step AI Explanation
Verified Method
Lysosomes and vacuoles are membrane-bound organelles that do not contain their own genetic material (DNA).
Q7mcq
Which of the following pair of organelles does not contain DNA?
a.
Nuclear envelope and Mitochondria
b.
Mitochondria and Lysosomes
c.
Chloroplast and Vacuoles
d.
Lysosomes and Vacuoles
Correct Answer
Step-by-Step AI Explanation
Verified Method
Lysosomes and vacuoles are membrane-bound organelles that do not contain their own genomic DNA, unlike mitochondria and chloroplasts.
Q8mcq
Placentation in which ovules develop on the inner wall of the ovary or in peripheral part, is
a.
Free central
b.
Basal
c.
Axile
d.
Parietal
Correct Answer
Step-by-Step AI Explanation
Verified Method
In parietal placentation, the ovules develop on the inner wall of the ovary or on the peripheral part (e.g., Mustard, Argemone).
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In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect statement from the following:
a.
Law of Segregation does not apply in this experiment
b.
This experiment does not follow the Principle of Dominance.
c.
Pink colour in F1 is due to incomplete dominance.
d.
Ratio of F2 is 1/4 (Red) : 2/4 (Pink) : 1/4 (White)
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What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?
a.
125 beats per minute
b.
50 beats per minute
c.
75 beats per minute
d.
100 beats per minute
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From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in
a.
Gymnosperms
b.
Liverworts
c.
Mosses
d.
Pteridophytes
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Colostrum the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the new born infants because it contains
a.
Immunoglobulin A
b.
Natural killer cells
c.
Monocytes
d.
Macrophages
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Match the following organisms with their respective characteristics: (a) Pila, (b) Bombyx, (c) Pleurobrachia, (d) Taenia with (i) Flame cells, (ii) Comb plates, (iii) Radula, (iv) Malpighian tubules.
a.
(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
b.
(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
c.
(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
d.
(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
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Match the following organisms with their respective characteristics:
(a) Pila (i) Flame cells
(b) Bombyx (ii) Comb plates
(c) Pleurobrachia (iii) Radula
(d) Taenia (iv) Malpighian tubules
Select the correct option from the following:
a.
(1) (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
b.
(2) (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
c.
(3) (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
d.
(4) (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
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Use of an artificial kidney during hemodialysis may result in:
(a) Nitrogenous waste build-up in the body
(b) Non-elimination of excess potassium ions
(c) Reduced absorption of calcium ions from gastro-intestinal tract
(d) Reduced RBC production
Which of the following options is the most appropriate?
a.
(1) (a) and (d) are correct
b.
(2) (a) and (b) are correct
c.
(3) (b) and (c) are correct
d.
(4) (c) and (d) are correct
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Match the hominids with their correct brain size :
(a) Homo habilis (i) 900 cc
(b) Homo neanderthalensis (ii) 1350 cc
(c) Homo erectus (iii) 650-800 cc
(d) Homo sapiens (iv) 1400 cc
a.
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
b.
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
c.
(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
d.
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
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Match Column - I with Column - II:
Column - I: (a) Saprophyte, (b) Parasite, (c) Lichens, (d) Mycorrhiza
Column - II: (i) Symbiotic association of fungi with plant roots, (ii) Decomposition of dead organic materials, (iii) Living on living plants or animals, (iv) Symbiotic association of algae and fungi
a.
(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
b.
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
c.
(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
d.
(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
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Match Column - I with Column - II:
Column - I: (a) Saprophyte, (b) Parasite, (c) Lichens, (d) Mycorrhiza
Column - II: (i) Symbiotic association of fungi with plant roots, (ii) Decomposition of dead organic materials, (iii) Living on living plants or animals, (iv) Symbiotic association of algae and fungi
a.
(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
b.
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
c.
(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
d.
(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
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A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?
a.
0.16(AA); 0.36(Aa); 0.48(aa)
b.
0.36(AA); 0.48(Aa); 0.16(aa)
c.
0.16(AA); 0.24(Aa); 0.36(aa)
d.
0.16(AA); 0.48(Aa); 0.36(aa)
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In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?
a.
Cyclical Selection
b.
Directional Selection
c.
Stabilizing Selection
d.
Disruptive Selection
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In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?
a.
Cyclical Selection
b.
Directional Selection
c.
Stabilizing Selection
d.
Disruptive Selection
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Consider the following statement:
(A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group.
(B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme.
Select the correct option.
a.
(A) is false but (B) is true.
b.
Both (A) and (B) are true.
c.
(A) is true but (B) is false.
d.
Both (A) and (B) are false.
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Consider following features
(a) Organ system level of organisation
(b) Bilateral symmetry
(c) True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics
a.
Annelida, Mollusca and Chordata
b.
Annelida, Arthropoda and Chordata
c.
Annelida, Arthropoda and Mollusca
d.
Arthropoda, Mollusca and Chordata
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It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
a.
Cytokinin and Abscisic acid
b.
Auxin and Ethylene
c.
Gibberellin and Cytokinin
d.
Gibberellin and Abscisic acid
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Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL, respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?
a.
2700 mL
b.
1500 mL
c.
1700 mL
d.
2200 mL
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Match the Column-I with Column-II:
Column-I:
(a) P-wave
(b) QRS complex
(c) T-wave
(d) Reduction in the size of T-wave
Column-II:
(i) Depolarisation of ventricles
(ii) Repolarisation of ventricles
(iii) Coronary ischemia
(iv) Depolarisation of atria
(v) Repolarisation of atria
a.
(1) (ii) (iii) (v) (iv)
b.
(2) (iv) (i) (ii) (iii)
c.
(3) (iv) (i) (ii) (v)
d.
(4) (ii) (i) (v) (iii)
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