NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology: Questions 3397 - 3401 of 3511

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Question number: 3397

» Ecology and Environment » Environmental Issues » Agrochemicals and Their Effects

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Appeared in Year: 2009

MCQ▾

Question

DDT residues are rapidly passed through food chain causing biomagnification because DDT is: - (CBSE)

Choices

Choice (4) Response

a.

Non-toxic to aquatic animals

b.

Moderately toxic

c.

Water soluble

d.

Lipo soluble

Question number: 3398

» Plant Physiology » Introduction to Plant Physiology

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Appeared in Year: 2001

MCQ▾

Question

What is the best pH of the soil for cultivation of plants: - (CBSE)

Choices

Choice (4) Response

a.

4.5 - 8.5

b.

5.5 - 6.5

c.

6.5 - 7.5

d.

3.4 - 5.4

Question number: 3399

» Ecology and Environment » Ecosystem » Patterns, Components

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Appeared in Year: 2009

MCQ▾

Question

Which one of the following types of organisms occupies more than one trophic level in a pond ecosystem? (CBSE)

Choices

Choice (4) Response

a.

Zooplankton

b.

Phytoplankton

c.

Frog

d.

Fish

Question number: 3400

» Human Physiology » Introduction to Human Physiology

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Appeared in Year: 2001

MCQ▾

Question

What is the intensity of sound in normal conversation? (CBSE)

Choices

Choice (4) Response

a.

10 - 20 decibel

b.

30 - 60 decibel

c.

120 - 150 decibel

d.

70 - 90 decibel

Question number: 3401

» Ecology and Environment » Organisms and Environment » Population Interactions-Mutualism, Competition, Predation, Parasitism

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Appeared in Year: 2010

MCQ▾

Question

Study the four statements (a-d) given below and select the two correct ones out of them:

  1. A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers
  2. Predator star fish Pisaster helps in maintaining species diversity of some invertebrates
  3. Predators ultimately lead to the extinction of prey species
  4. Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders

The two correct statements are: (CBSE)

Choices

Choice (4) Response

a.

(1) and (4)

b.

(2) and (3)

c.

(1) and (2)

d.

(3) and (4)