Systematic insecticides ?

A. Enter the insects through the spiracles

B. Are applied directly on the insect's exoskeleton

C. Are ingested by insects through feeding

D. Repel insects without killing them

Everyday Science · Zoology & Animal Kingdom · page 27 of 46

Classes of Animals MCQs with Answers

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Classes of Animals MCQs (261–270)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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261.
Amphibians are considered to be evolved from _?
Correct Answer: D. Dipnoi
One-liner
Amphibians are considered to have evolved from Dipnoi (lungfishes).
262.
The fins that act as stabilizers are _?
Correct Answer: D. All of these
One-liner
Dorsal, pectoral, and pelvic fins all act as stabilizers in fish, so the correct answer is All of these.
263.
The legs and feet color of Netta rufina is ?
Correct Answer: D. Reddish orange
One-liner
The legs and feet of Netta rufina (Red-crested Pochard) are reddish orange in color.
264.
Molding occurs in insects when they are?
Correct Answer: B. Immature
One-liner
Molding (molting) occurs in insects when they are immature, as they shed their exoskeleton to grow during the larval/nymphal stages.
265.
fishes adjust volume by gulping or spitting air, are mostly shallow water species, gas-spitting and gulp air at surface.
Correct Answer: B. Physostomous
One-liner
Physostomous fishes are those that have a pneumatic duct connecting the swim bladder to the gut, allowing them to adjust buoyancy by gulping or spitting air at the surface.
266.
The venous system of frog differs from that of a mammal in the presence of ?
Correct Answer: B. Renal portal system
One-liner
The venous system of a frog differs from that of a mammal in the presence of the renal portal system.
267.
During pulmonary respiration in frog, the air enters through ?
Correct Answer: A. Nostrils
One-liner
During pulmonary respiration in frog, air enters through the nostrils (external nares).
268.
Mantle cavity and radula is a characteristic of _?
Correct Answer: B. Molluscs
One-liner
Mantle cavity and radula are characteristic features of Molluscs.
269.
Vertebrates are divided into how many main groups based on temperature regulation?
Correct Answer: C. 2
One-liner
Vertebrates are divided into 2 main groups based on temperature regulation: endotherms (warm-blooded) and ectotherms (cold-blooded).
270.
Systematic insecticides ?
Correct Answer: A. Enter the insects through the spiracles
One-liner
Systematic insecticides enter the insects through the spiracles, which are the tiny respiratory openings on their body surface.

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Classes of Animals MCQs with Answers

Classes of Animals MCQs (261–270)

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