Respiration in Organisms Test

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Respiration in Organisms Test - 11

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Weekly Quiz Competition

Question 1
1 / -0

Gas exchange surface of Earthworm is

A
Tracheae

B
Gills

C
Skin

D
Ctenidia

Solution

The carbon dioxide molecules diffuse from inside the cell to the outside environment. This gas exchange is vital to an earthworm's ability to live. Earthworms do not have specialized respiratory organs instead, they take in oxygen and expel carbon dioxide directly through their skin.
So the correct answer is 'Skin'.
Question 2
1 / -0

Root hair helps in better absorption of air and water as:

A
It increases the surface area for absorption.

B
It helps in growth and developement.

C
It increases the rate of flowering in plants.

D
All of the above.

Solution

Roots have hairlike projections called root hairs protruding from their surface. These root hairs help the plant absorb more air, nutrients and water because they increase the available surface area.
So, the correct option is A.
Question 3
1 / -0

The floating roots in water absorbs the air from

A
Dissolved oxygen in water

B
Dissolved oxygen in soil

C
Stomata

D
None of the above

Solution

Plants that float on the surface of the water have their stomata on top, where they have access to air. Plants that live completely underwater gather carbon dioxide from the water. When they release oxygen you can see tiny air bubbles gathering around them. Plant roots drink water and nutrients from the environment.
So, the correct option is 'Dissolved oxygen in water'.
Question 4
1 / -0

Products of anaerobic respiration are

A
Alcohol and carbon monoxide

B
Alcohol and lactic acid

C
Lactic acid and glycogen

D
Acetic acid and carbon dioxide

Solution

Anaerobic respiration occurs in the absence of oxygen and is less efficient than aerobic respiration. Unlike aerobic respiration, the end products here are ethyl alcohol as in yeasts and lactic acid as in animal cells. So the answer is 'Alcohol and lactic acid'.
Question 5
1 / -0

Roots of plants take up air from:

A
The air spaces present between the soil particles

B
The bacteria surrounding the roots

C
The leaves

D
The stem tissues

Solution

The roots of a plant take up air from the air spaces present between the soil particles. Oxygenated air is present in air spaces between soil particles, but in very few quantities.
So, the correct answer is option A.
Question 6
1 / -0

Which one of the following organism may respire in the absence of oxygen?

A
Azotobacter

B
Clostridium

C
Rhizobium

D
Lactobacillus
Question 7
1 / -0

The respiratory organ of the fish is able to trap

A
Dissolved oxygen in the air

B
Dissolved oxygen in the water

C
Dissolved oxygen from the aquatic plants.

D
None of the above

Solution

Gills are the respiratory organs of the fishes. It helps in gaseous exchange by absorbing the dissolved oxygen in water. The dissolved oxygen from the water diffuses into the blood capillaries.
So, the correct answer is option B.
Question 8
1 / -0

Leaves of the plant have tiny pores for the exchange of oxygen and carbon dioxide. These small pores are known as:

A
Nodule

B
Stomata

C
Radicle

D
None of the above

Solution

In plants, the stoma is a tiny opening found on the under-surface of leaves. These pores provide the passage for the entry of the air and the exchange of gases. They are also useful during transpiration for the escape of water vapour into the atmosphere.
So the correct option is 'Stomata'
Question 9
1 / -0

Consider the following statements.
a. Acetaldehyde is an electron acceptor during respiration
b. In Critic Acid Cycle, pyruvate is transported from cytosol to mitochondrial matrix
c. The Pentose Phosphate Pathway occurs in cytosol
Which of these statements are correct?

A
$$1, 2$$ and $$3$$

B
$$1$$ and $$2$$

C
$$2$$ and $$3$$

D
$$1$$ and $$3$$
Question 10
1 / -0

The end product of eukaryotic cellular aerobic respiration include(s):

A
Carbon dioxide

B
Water

C
ATP

D
All of these

Solution

Aerobic respiration is the process of the breakdown of glucose in the presence of oxygen into carbon dioxide, water, and energy (in the form of ATP).
Therefore the correct answer is 'All of these.'

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Re-Attempt Weekly Quiz Competition

Respiration in Organisms Test - 11

Result

Respiration in Organisms Test - 11

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SHARING IS CARING

Question 1

Tracheae

Gills

Skin

Ctenidia

Solution

Question 2

It increases the surface area for absorption.

It helps in growth and developement.

It increases the rate of flowering in plants.

All of the above.

Solution

Question 3

Dissolved oxygen in water

Dissolved oxygen in soil

Stomata

None of the above

Solution

Question 4

Alcohol and carbon monoxide

Alcohol and lactic acid

Lactic acid and glycogen

Acetic acid and carbon dioxide

Solution

Question 5

The air spaces present between the soil particles

The bacteria surrounding the roots

The leaves

The stem tissues

Solution

Question 6

Azotobacter

Clostridium

Rhizobium

Lactobacillus

Question 7

Dissolved oxygen in the air

Dissolved oxygen in the water

Dissolved oxygen from the aquatic plants.

None of the above

Solution

Question 8

Nodule

Stomata

Radicle

None of the above

Solution

Question 9

$$1, 2$$ and $$3$$

$$1$$ and $$2$$

$$2$$ and $$3$$

$$1$$ and $$3$$

Question 10

Carbon dioxide

Water

ATP

All of these

Solution

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