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

Question-1

The study of interactions among organisms and between the organism and its physical (abiotic) environment is

(a) environmental study

(b) ecosystem study

(c) ecology

(d) population study

Question-2

Which of the following is correct for r-selected species?

(a) Large number of progeny with large size

(b) Large number of progeny with small size

(c) Small number of progeny with small size

(d) Small number of progeny with large size

Question-3

The given figure shows the diagram match representation of organismic response. Which option gives the correct identification of three types of organisms (marked as A, B & C) in response to abiotic factor?

	(A)	(B)	(C)
(a)	Partial regulator	Regulator	Conformers
(b)	Regulator	Conformers	Partial regulator
(c)	Conformers	Regulator	Partial regulator
(d)	Regulator	Partial regulator	Conformers

(a) (a)

(b) (b)

(c) (c)

(d) (d)

Question-4

How seals can survive in polar climate where the temperature prevails below 0°C?

(a) They have thick layer of fat below their skin

(b) They have long hairs on their body surface

(c) Both (a) and (b)

(d) They have genetic regulation for avoiding cold climate

Question-5

In order to achieve maximum population in a habitat, which of the following is correct?

(a) Low r value

(b) High r value

(c) Independent of r value

(d) Optimum r value

Question-6

A species whose distribution is restricted to a small geographical area because of the presence of a competitive superior species is found to expand its distributional range dramatically when the competing species is experimentally removed. This phenomenon is known as

(a) Competitive release

(b) Competitive exclusion

(c) Interference competition

(d) Resource partitioning

Question-7

Which statement does not reflect a reason why grasses predominate in savannas?

(a) Grasses grow well in fine, sandy soils.

(b) There are few native herbivores in this biome.

(c) The above ground portions of grass plants die during dry seasons.

(d) The deep roots of the grasses can survive many months of drought.

Question-8

The r value for Norway rat is __________

(a) 0.0015

(b) 0.15

(c) 0.015

(d) 1.5

Question-9

Soil best suited for plant growth is

(a) clay

(b) sandy

(c) loamy

(d) gravel

Question-10

More than 70% of world's freshwater is contained in

(a) glaciers and mountains

(b) polar ice

(c) Antarctica

(d) Greenland.