Free Organisms And Populations (Daily Quiz: 14) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Deep (>500m) in the oceans, the environment is perpetually dark and its inhabitants are not aware of the existence of a celestial source of energy called_________.

(a) photosynthesis

(b) ATP

(c) sun

(d) light

Question-2

The maximum expansion rate of a population under the best conditions is referred to as _____. There are abundant resources that last forever and no limits on growth.

(a) cohort

(b) biotic potential

(c) mortality rate

(d) biome

Question-3

A country with a high rate of population growth took measures to reduce it. The Figure below shows age-sex pyramids of populations A and B twenty years apart. Select the correct interpretation about them: Interpretations:

(a) “B” is more recent showing that population is veryyoung.

(b) “B” is earlier pyramid and shows stabilised growth rate..

(c) “A” is the earlier pyramid and no change has occurred in the growth rate.

(d) “A” is more recent and shows slight reduction in the growth rate.

Question-4

Photosynthetic function in opuntia is performed by __________

(a) Flowers

(b) Roots

(c) Fruits

(d) Stems

Question-5

...A... regulators are able to maintain homeostasis by means which ensure constant body temperature, constant osmotic concentration, etc. All ...B... and ...C... are a very few lower vertebrates and invertebrate species are indeed capable of such regulation (thermoregulation and osmoregulation). Evolutionary biologists believe that the 'success' of mammals is largely due to their ability to maintain a constant body ...D... and thrive whether they live in Antarctica or in the Sahara Desert. Choose the correct option for A, B, C and D.

(a) A–Behavioural, B–bird, C–mammals, D–temperature

(b) A–Behavioural, B–vertebrates, C–invertebrates, D–temperature

(c) A–Physiological, B–bird, C–mammals, D–temperature

(d) A–Behavioural, B–vertebrates, C–invertebrates, D–morphology