Question # 1

Charles Darwin proposed that organisms produce many more offspring than can possible survive on the limited amount of resources available to them. According To Darwin, the offspring that are most likely to survive are those that.

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Are born first and grow fastest

Are largest and most aggressive

Have no natural predators

Are best adapted to the environment.

How many lobs are present in right lung?

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2

3

4

5

All populations collectively are called.

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Species

Blome

Community

Ecosystem

What are the main components of a a bone?

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Marrow, spongy , bone , wax

Narrow, compact bone, wax

Compact bone and narrow

Compact bone, spongy bone

Cytocine always makes pair with :

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Guanine

Hydrogen

Adenine

Thymine

Sir Alexander Fleming was discovered:

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Antibiotics

Analgesic

Penicillin

Antiseptics

How many bones make our skull?

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14

22

24

26

In propagation of peach _________ is use:

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Cutting

Grafting

Suckers

Runners

Point of attachment is pulled when a muscle contracts is called.

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Origin

Insertion

Both a and b

None of these

James Watson and Francis Crick proposed the structure of DNA in.

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1953

1963

1933

1922

One of these cycles is also nutrients cycles.

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Biogeochemical cycles

Carbon cycles

Water cycles

Nitrogen cycles

The bands of connective tissue which prevent dislocation of bones at joints are:

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ligaments

tendons

cartilage

muscles

The myelin sheath is formed by which wrap around the axons of some neurons.

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Nodes of Ranvier

Axons

Dendrites

Schwann cells

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