NEET UG 2023 — Organisms and Populations

Zoology Organisms and Populations questions from NEET UG 2023.

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8 Organisms and Populations Questions from 2023

For chemical defence against herbivores, Calotropis has

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : A person goes to high altitude and experiences "Altitude Sickness" with symptoms like breathing difficulty and heart palpitations. Reason (R) : Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen. In the light of the above statements, choose the correct answer from the options given below :

hard

mcq

Given below are two statements: Statement I: Gause's 'Competitive Exclusion Principle' states that two closely related species competing for the same resources cannot co- exist indefinitely and competitively inferior one will be eliminated eventually. Statement II: In general, carnivores are more adversely affected by competition than herbivores. In the light of the above statements, choose the correct answer from the options given below:

medium

mcq

If there are 250 snails in a pond, and within a year their number increases to 2500 by reproduction. What should be their birth rate per snail per year?

easy

mcq

Match List I with List II: <table class="pyq-table"><tbody><tr><td>List I (Interacting species)</td><td>List II (Name of Interaction)</td></tr><tr><td>A. A Leopard and a Lion in a forest/grassland</td><td>I. Competition</td></tr><tr><td>B. A Cuckoo laying egg in a Crow's nest</td><td>II. Brood parasitism</td></tr><tr><td>C. Fungi and root of a higher plant in Mycorrhizae</td><td>III. Mutualism</td></tr><tr><td>D. A cattle egret and a Cattle in a field</td><td>IV. Commensalism</td></tr></tbody></table>Choose the correct answer from the options given below:

easy

mcq

Match List I with List II: <table class="pyq-table"><tbody><tr><td>List I (Interaction)</td><td>List II (Species A and B)</td></tr><tr><td>A. Mutualism</td><td>I. +(A), 0(B)</td></tr><tr><td>B. Commensalism</td><td>II. -(A), 0(B)</td></tr><tr><td>C. Amensalism</td><td>III. +(A), -(B)</td></tr><tr><td>D. Parasitism</td><td>IV. +(A), +(B)</td></tr></tbody></table>Choose the correct answer from the options given below:

easy

mcq

Match List I with List II: <table class="pyq-table"><tbody><tr><td>List I</td><td>List II</td></tr><tr><td>A. Logistic growth</td><td>I. Unlimited resource availability condition</td></tr><tr><td>B. Exponential growth</td><td>II. Limited resource availability condition</td></tr><tr><td>C. Expanding age pyramid</td><td>III. The percent individuals of pre-reproductive age is largest followed by reproductive and post reproductive age groups</td></tr><tr><td>D. Stable age pyramid</td><td>IV. The percent individuals of pre-reproductives and reproductive age group are same</td></tr></tbody></table>Choose the correct answer from the options given below:

easy

mcq

Plants offer rewards to animals in the form of pollen and nectar and the animals facilitate the pollination process. This is an example of :

easy

mcq