Nutrition in Plants Test

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Nutrition in Plants Test - 11

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Question 1
1 / -0

$${ G }_{ 0 }$$ state of cell denotes

A
Exit of cell from cell cycle

B
Check point before entering next phase

C
Death of cell

D
Temporary pause
Question 2
1 / -0

(1 point) In the electron transport chain in mitochondria, several proteincomplexes traverse the mitochondrial inner membrane. Mark the figure that shows correct topology of these complexes.

A

B

C

D
Question 3
1 / -0

A typical cell contain which of the following main components?

A
Cell membrane

B
Cytoplasm

C
Nucleus

D
All of the above
Solution
Be it a plant cell or an animal cell, three essential parts are observed under the microscope. They are:
The cell membrane (also called plasma membrane)
Cytoplasm
Nucleus
Thus, a typical cell contains all these three parts. Option D is correct.
Question 4
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Humans and animals are dependent on plants.

A
Directly

B
Indirectly

C
Both A and B

D
None of the above

Solution

Humans and animals are dependent on plants directly or indirectly for food.
Only plants are autotrophs i.e., they are capable of synthesizing their own food. Animals are heterotrophs i.e., they are incapable of synthesizing their own food. They depend on plants and other animals for food. The man also being a heterotroph, gets his food from plants as well as animals. Thus, the correct answer is option C.
Question 5
1 / -0

Pulses are rich in protein because of _____________

A
Insectivorous habit

B
High requirement of nitrogen fertilizers.

C
Rhizobium

D
Green manuring

Solution

Pulses or legumes belong to the family of leguminous plants. Leguminous plants need a rich supply of nitrogen for the production of high protein content. Since nitrogen present in the atmosphere is not readily available, leguminous plants establish a symbiotic association with a bacteria called Rhizobium. Rhizobium helps in fixing atmospheric nitrogen into usable nitrogenous compounds. In exchange, the plant provides the bacteria with food and shelter.
So, the correct answer is option C.
Question 6
1 / -0

Green plants can synthesize their own food. They are called ________.

A
Autotrophs

B
Heterotrophs

C
Parasites

D
All of the above
Solution
- Green plants are capable of producing their own food by the process of photosynthesis. They prepare food using carbon dioxide, water, sunlight, and chlorophyll. Thus, they are called primary producers or autotrophs.
- Heterotrophs are organisms that are incapable of making their own food from light or inorganic compounds. They feed on other organisms or the remains of other organisms.
Parasites are organisms that live in or on another organism and take nourishment from it.
So, the correct answer is option A.
Question 7
1 / -0

Natural system of classification employs

A
Complexity of cell structure

B
Complexity of body structure

C
Organisation

D
All the above
Question 8
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Autotrophs can be differentiated from the heterotrophs in terms of the:

A
Mode of obtaining food

B
Nature of the cell, i.e. prokaryotic or eukaryotic

C
Organization of the body or cell of that organism

D
All of the above
Question 9
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Heterotrophs may be

A
Holozoic.

B
Saprophytic.

C
Parasitic.

D
All of the above.

Solution

Any organism that cannot produce their own food is called as heterotrophs. They obtain its food and energy from plant or another animal. All animals, protozoans, fungi, and most bacteria are heterotrophs. Holozoic modes of nutrition is a method of heterotrophic nutrition that involves the ingestion of liquid or solid organic material, digestion, absorption and assimilation of it to utilize it. For example, Amoeba. Saprophytes are the animals which feed on dead and decaying animals. For example, moulds, mushroom etc. Parasitic mode of nutrition is that in which organism feeds on a living organism (host). For example, leach, flatworm, plain worms etc.
Therefore, the correct answer is option D.
Question 10
1 / -0

............ is taken in through the tiny pores present on the surface of the leaves

A
Carbon dioxide

B
Nitrogen

C
Oxygen

D
None of these

Solution

Carbon dioxide is taken in through the tiny pores present on the surface of the leaves. These pores are called stomata.
So, the correct answer is option A.