Free Organisms And Populations (Monthly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Which of the following forest plants controls the light conditions at the ground?

(a) Shrubs

(b) Lianas and climbers

(c) Tall trees

(d) Herbs

Question-2

Very small animals are rarely found in polar region because

(a) small animals have a smaller surface area relative to their volume, so they lose body heat very fast when it is cold outside

(b) small animals have a larger surface area relative to their volume, so they lose body heat very fast when it is cold outside

(c) small body volume makes internal heat production very difficult

(d) None of the above

Question-3

If the age distribution (per cent individuals of a given age or group) is plotted for the population, the resulting structure is called a/an

(a) ecological pyramid

(b) population density

(c) population growth

(d) age pyramid

Question-4

In a growing population of a country,

(a) reproductive individuals are less than the post-reproductive individuals

(b) reproductive and pre-reproductive individuals are equal in number

(c) pre-reproductive individuals are more than the reproductive individuals

(d) pre-reproductive individuals are less than the reproductive individuals

Question-5

The term ‘precipitation’ includes

(a) Hails

(b) Rain

(c) Snow

(d) All forms of water that fall to the ground

Question-6

Identify the lines present in the given graph A, B and C.

(a) A–Partial regulators, B–Ectotherms, C–Endotherms

(b) A–Partial regulators, B–Regulators, C–Endotherms

(c) A–Partial regulators, B–Regulators, C–Conformers

(d) A–Conformers, B–Ectotherms, C–Partial regulators

Question-7

In Ophrys, one petal of female flower bears an uncanny resemblance to the female of the bee in which of the following aspect?

(a) Colour

(b) Size

(c) Markings

(d) All of these

Question-8

Assertion:
Due to change in seasons, temperature also changes.
Reason:
To cope up with this, plants can regulate the internal body temperature.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.

Question-9

Who employed the term ecology for study plants?

(a) Odum

(b) Haeckel

(c) Warming

(d) Dudgeon

Question-10

Succulents occur in –

(a) Tundra

(b) Deserts

(c) Temperate deciduous forests

(d) Tropical rain forests

Question-11

Which one is true?

(a) Commensalism when none of the interacting populations affect each other.

(b) Symbiosis when neither populations affects each other.

(c) Symbiosis when the interaction is useful to both the populations.

(d) Commensalism when the interaction is useful to both the populations

Question-12

Which model is considered a more realistic one?

(a) Exponential model

(b) Logistic model

(c) Geometric model

(d) J-shaped model

Question-13

If the age distribution is plotted for a population, the resulting structure is called as

(a) age curve

(b) age graph

(c) age pyramid

(d) age diagram

Question-14

Assertion (A) Ecological equivalents possess similar types of adaptations.
Reason (R) Ecological niche is the total interaction of a species with environment.

(a) If both A and R are true, but R is not the correct explanation of A

(b) If both A and R are true and R is the correct explanation of A

(c) If A is true, but R is false

(d) If A is false, but R is true

Question-15

Human liver fluke has two intermediate hosts in its life cycle; these are

(a) Crustacean and fish

(b) Snail and hydra

(c) Snail and fish

(d) Mosquito and snail

Question-16

The symptoms of altitude sickness are

(a) Heart palpitations

(b) Nausea

(c) Fatigue

(d) All of these

Question-17

Predation is

(a) a natural way of transferring of energy to higher trophic level

(b) an unnatural way of transferring of energy to higher trophic level

(c) harmful to the natural balance

(d) All of the above

Question-18

Cause of mimicry is

(a) concealment

(b) defence

(c) offence

(d) both (b) and (c)

Question-19

Select the incorrect statement.

(a) An orchid growing as an epiphyte on a mango branch is an example of commensalism.

(b) Overwhelming majority of animals and nearly all plants maintain a constant internal temperature.

(c) In brood parasitism, the parasitic bird lays its eggs in the nest of its host and lets the host to incubate them.

(d) In amensalism, one species is harmed whereas the other is unaffected.

Question-20

Which one of the following processes during decomposition is correctly described ?

(a) Fragmentation – Carried out by organisms such as earthworm

(b) Catabolism – Last step in the decomposition under fully anaerobic condition

(c) Humification – Leads to the accumulation of a dark coloured substance humus which undergoes microbial action at a very fast rate

(d) Leaching – Water soluble inorganic nutrients rise to the top layers of soil