Free Ecosystem (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Choose the correct option for the incorrect statements from the following.

1. Plants form second trophic level.
2. Herbivores eat grass and form first trophic level. III The example of top carnivore is tertiary level consumers.
3. Detritivores are also a form of consumers.

(a) II and III

(b) I and II

(c) III and IV

(d) I and IV

Question-2

When man eats fish which feeds on zooplankton which have eaten small plants, the producer in the chain is

(a) Small plants

(b) Zooplankton

(c) Fish

(d) Man

Question-3

Which one of the following process help the watersoluble inorganic nutrients go down into the soil horizon and get precipitated as unavailable salts?

(a) Leaching

(b) Fragmentation

(c) Catabolism

(d) Humification

Question-4

The biomass available for consumption by the herbivores and the decomposers is called

(a) secondary productivity

(b) net primary productivity

(c) standing crop

(d) gross primary productivity.

Question-5

Among the following where do you think the process of decomposition would be the fastest?

(a) Antarctic

(b) Tropical rain forest

(c) Dry arid region

(d) Alpine region

Question-6

Climax community is

(a) self-perpetuating

(b) stable

(c) final biotic community

(d) All of these

Question-7

In a food chain herbivores/deer are-

(a) Primary consumers

(b) Primary producers

(c) Secondary consumers

(d) Decomposers

Question-8

What is the medium by which carbon cycle takes place?

(a) Through ocean

(b) Through atmosphere

(c) Through living and dead organisms

(d) All of the above

Question-9

Regarding 10% law.

1. This law was put forward by Lindemann in 1942.
2. According to this law, during the transfer of food energy from one tropical level to the other, only about 10% is stored at higher trophic level and the remaining 90% is lost in respiration, decomposition and waste in the form of heat.

Which of the statements given above is/are correct?

(a) Only II

(b) Only I

(c) Both I and II

(d) None of these

Question-10

Food chain starts with

(a) osmosis

(b) $N_2$ -fixation

(c) respiration

(d) photosynthesis