Biology - Mock Test 226

Question 2251

What is the exclusive marine phylum?

A) Echinodermata B) Porifera C) Cnidarians D) Protozoa

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Question 2252

Which phylum of animals is also called flatworms?

A) Porifera B) Coelenterata C) Platyhelminthes D) Nematoda

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Question 2253

In which the reproductive organs are hidden?

A) Cryptogamae B) Phanerogamae C) Gymnosperms D) angiosperms

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Question 2254

Neural system consists of paired ganglia connected by lateral nerves to double ________ in annelida?

A) ventral nerve cord B) dorsal nerve cord C) Anterior nerve cord D) posterior nerve cord

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Question 2255

Which of the following must increase over geological time according to evolutionary biologists?

A) Size . B) Complexity . C) Speed of evolutionary processes such as mutation. D) All of the above.

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Question 2256

Name the type of adaptation from the following that is responsible for shivering thermogenesis?

A) Structural B) Physiological C) Behavioral. D) None of these

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Question 2257

Production of pyrogens is a ________ phenomenon?

A) Protective B) Destructive C) Constructive D) Aggressive

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Question 2258

Thermostat of human body is present in?

A) Fore brain. B) Hind Brain. C) Thalamus. D) Hypothalamus.

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Question 2259

Panting is a representative of which mechanism?

A) Pigmentation. B) Respiration. C) Evaporative cooling. D) Excretion.c

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Question 2260

Blubber a thick layer of fat is present in?

A) Fresh water mammals. B) Terrestrial mammals. C) Marine Mammals. D) Flying mammals.

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