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Q. No.Identify the incorrect statement about frog:
1.
During aestivation and hibernation, gaseous exchange takes place through skin.
2.
Forebrain includes olfactory lobes, paired cerebral hemispheres and unpaired diencephalon.
3.
The urinary bladder is present dorsal to the rectum which also opens in the cloaca.
4.
A mature female can lay 2500 to 3000 ova at a time.
Subtopic: Frogs: Anatomy (Excretory System) |
73%
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Epithelial tissues lining the inner surface of the stomach are simple columnar epithelium with microvilli. What is the primary function of these microvilli?
| 1. | They provide structural support |
| 2. | They facilitate secretion |
| 3. | They increase surface area for absorption |
| 4. | They act as sensory receptors |
Subtopic: Simple Epithelium |
91%
From NCERT
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The frog's nervous system is categorised as:
| 1. | Exclusively autonomic nervous system |
| 2. | Only central nervous system |
| 3. | Central nervous system with paired nerves in peripheral nervous system |
| 4. | Central nervous system with unpaired nerves in peripheral nervous system |
Subtopic: Frogs: Anatomy (Nervous System) |
86%
From NCERT
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Skeletal muscles are attached to bones by structures called:
| 1. | Cartilages | 2. | Ligaments |
| 3. | Tendons | 4. | Fasciae |
Subtopic: Connective Tissue |
85%
From NCERT
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Consider the given two statements:
| Assertion(A): | The cockroach has an open circulatory system with hemolymph. |
| Reason(R): | Open circulatory systems are more efficient for transport in large and active animals. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Cockroach: Circulatory System |
93%
From NCERT
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Which of the following will be true for Periplaneta americana?
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Nocturnal omnivores |
| II: | Serious pests and vectors of several diseases |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Cockroach: Intro & External Morphology |
88%
From NCERT
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In Periplaneta americana:
| I: | Flat extension of the upper body wall conceals head. |
| II: | Wings extend beyond the tip of the abdomen in females. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Cockroach: Intro & External Morphology |
55%
From NCERT
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In cockroach:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | The head capsule bears a pair of compound eyes. |
| II: | A pair of antennae arise from the membranous sockets lying in front of the eyes. |
| III: | Mouth parts are biting and chewing type. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Cockroach: Intro & External Morphology | Cockroach: Head & Mouth Parts |
91%
From NCERT
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In cockroach:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | The abdomen in both males and females has ten segments. |
| II: | In females, the seventh sternum is boat shaped and together with eighth and ninth sterna forms a brood or genital pouch. |
| III: | In males, genital pouch of chamber is bounded dorsally by ninth and tenth terga and ventrally by ninth sternum. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Cockroach: Intro & External Morphology |
From NCERT
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In cockroach:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Gastric or hepatic caeca are 6 to 8 in number and present at the junction of mid gut and hind gut. |
| II: | Malpighian tubules are 100 to 150 in number and present at the junction of fore gut and mid gut. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Cockroach: Digestive System |
67%
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