Question # 1

The thickness of biosphere is:

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02 km

20 km

50 km

200 km

The populations that live in a habitat and interact with one another are collectively called.

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Biosphere

Ecosystem

Community

species

The glottis is guarded by a flap of tissue called:

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Trachia

Glottis

Bronchi

Epiglottis

Which of the following is the abiotic component of an ecosystem?

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producers

Herbivores

Carnivorse

Oxygen

Cactus plant is.

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Hydrophyte

Xerophyte

Halophyte

Mesophyte

Rate of breathing depends upon concentration of which gas:

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

A thick muscular layer beneath lungs is called:

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Kidney

Diaphragm

Bladder

Ureter

Example of hydrophyte plants is.

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Grass

Sea grass

Catus

Water lilly

Pollination is the transfer of pollens from:

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Anther to sigma

Stigma to anther

Sepal to petal

Petal to sepal

Which of the following is called voice box?

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Trachea

Larynx

Bronchi

Alveoli

Example of Ectoparasite is:

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Becteria

Virus

Ascaris

Mosquito

The lowest trophic level of an ecosystem always includes.

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Herbivores

Carnivores

Producer

Decomposers

In _________ the buds do not detach from the parent body.

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Hydra

amoeba

Becteria

Corals

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