Ecology and Environment-Ecosystem (NEET (National Eligibility cum Medical Entrance Test) Biology): Questions 66 - 73 of 125

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Question number: 66

» Ecology and Environment » Ecosystem » Ecological Succession

MCQ▾

Question

Primary succession is development of communities on

Choices

Choice (4) Response

a.

Cleared forest area.

b.

Freshly harvested crop field.

c.

Pond filled after a dry season.

d.

Newly exposed habitat.

Question number: 67

» Ecology and Environment » Ecosystem » Productivity and Decomposition

MCQ▾

Question

The net primary productivity of an ecosystem is

Choices

Choice (4) Response

a.

Total weight of green plants is divided by respiratory losses

b.

Respiratory losses alone

c.

Total weight of green plants is added by respiratory losses

d.

All of the above

Question number: 68

» Ecology and Environment » Ecosystem » Nutrient Cycling

MCQ▾

Question

Phosphorus cycles is in the form of

Choices

Choice (4) Response

a.

HPO3 _

b.

PO43-

c.

At (PO4) 3

d.

P2 (gas)

Question number: 69

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

Which is not a part of atmosphere?

Choices

Choice (4) Response

a.

Temperature

b.

Light

c.

Edaphic factor

d.

Precipitation

Question number: 70

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

The closely related morphologically similar sympatric populations, but reproductively isolated, are designated as

Choices

Choice (4) Response

a.

Demes

b.

Clones

c.

Clines

d.

Sibling species

Question number: 71

» Ecology and Environment » Ecosystem » Ecological Succession

MCQ▾

Question

Ecological succession on sand is called

Choices

Choice (4) Response

a.

Xerosere

b.

Halosere

c.

Psammosere

d.

Hydrosere

Question number: 72

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

The pyramid of number in a grassland ecosystem is

Choices

Choice (4) Response

a.

Always erect

b.

Either erect or inverted

c.

Irregular

d.

Always inverted

Question number: 73

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

The side effects of heavy and constant grazing is that the

Choices

Choice (4) Response

a.

Lower compact layer makes root penetration difficult.

b.

Upper layer of the soil are loosened and are eroded.

c.

Lower layer are made more compact and root respiration is interfered with.

d.

All the above.

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