NEET Practice Questions (MCQs) with Answers & Solutions

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Where are sieve like structures present in the alimentary canal of Cockroach ?

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Explanation

In the alimentary canal of a cockroach, the sieve-like structures are present at the posterior end of the gizzard. The gizzard, also known as the proventriculus, is responsible for grinding the food, and the sieve plates help in filtering out larger particles.

Malpighian tubules in Cockroach are....... organs.

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Explanation

Malpighian tubules in cockroaches are excretory organs. They are involved in the removal of waste products from the hemolymph and play a crucial role in osmoregulation and excretion.

In Cockroach Malpighian tubules open in ..........

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Explanation

In cockroaches, the Malpighian tubules open at the junction of the midgut and hindgut. This location allows them to efficiently collect waste products from the hemolymph and excrete them into the gut.

In Cockroach, morphologically rectum is.......... shaped and.............. from inside.

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Explanation

In cockroaches, the rectum is bag-like in shape and folded from the inside to increase the surface area for absorption of water and salts from the waste material before excretion.

In Cockroach, colon is present at the posterior region of ..........

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Explanation

The colon in cockroaches is part of the hindgut. It is located posteriorly and is responsible for the absorption of water and salts from the waste material.

Which of the following cell organelles is concerned with photophosphorylation?

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Explanation

Photophosphorylation is the process by which ATP is formed utilizing the energy of sunlight during photosynthesis. This process occurs in the chloroplasts of plant cells.

Cockroach searches its food with the help of..........

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Explanation

Cockroaches use their antennae to search for food. The antennae are sensory organs that help in detecting chemical signals, vibrations, and other environmental cues which guide them towards food sources.

In alimentary canal of Cockroach............ cells of midgut and hepatic caeca secrete enzymes.

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Explanation

In the alimentary canal of a cockroach, the columnar cells of the midgut and hepatic caeca secrete digestive enzymes. These enzymes help in the breakdown of food particles for easier absorption.

The haemolymph of Cockroach is mostly composed of .......... and ..........

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The heart of Cockroach is made up of........ units.

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