Nutrition in Plants Test

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Nutrition in Plants Test - 15

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is/are correct?
i) All green plants can prepare their own food.
ii) Most animals are autotrophs.
iii) Carbon dioxide is not required for photosynthesis.
iv) Oxygen is liberated during photosynthesis.
Choose the correct answer from the options below

A
(i) and (iv)

B
(ii) only

C
(ii) and (iii)

D
(i) and (ii)
Solution
- All the green plants are - producers" so they can set up their own food.
- Animals don't make their own food. They are heterotrophs.
- Carbon dioxide and water required for the process of photosynthesis in plants.
- Oxygen liberates in the process of photosynthesis.
  Statement (I) and (iv) are the correct statements.
The correct answer is (a).
Question 2
1 / -0

Identify the part of the cell by the hints given:
*This part of the cell is present in ALL cells. It is the gel-like substance that provides cell shape.

A
Cytoplasm

B
Chromosomes

C
Nucleus

D
Cell membrane

Solution

The gel like substance which give shape to cell is called Cytoplasm. Option A is correct.
Question 3
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Why are most cells so small?

A
We can see them with a microscope.

B
They can fit in our bodies.

C
They can reproduce quickly.

D
They can take in food and get rid of waste.

Solution

Cells are so little, so they can maximize their ratio of surface area to volume. Smaller cells have a higher ratio which allows more molecules and ions to move across the cell membrane per unit of cytoplasmic volume. Cells are so small because they need to be able to get the nutrients in and the waste out quickly.
Question 4
1 / -0

What cell part is NOT present in all the cells?

A
Cell Wall

B
Genetic material

C
Cell membrane

D
Cytoplasm

Solution

Cell wall is only found in plant cells and not in any other cells. Option A is correct.
Question 5
1 / -0

The insectivorous plants are____________.

A
heterotrophs

B
partial heterotrophs

C
omnivores

D
partial omnivores

Solution

The insectivores depend on the insects for external nutrients which can't be prepared by them. Thus, they are partial heterotrophs. Option B is correct.
Question 6
1 / -0

What tool do you use to view the cells?

A
Microscope

B
Microruler

C
Microlasers

D
All of the above

Solution

Cells are observed under Microscope for detailed resolution.
Option A is correct.
Question 7
1 / -0

The association of Rhizobium with Leguminous plants is called__________.

A
Symbiotic relationship

B
Parasitic relationship

C
Predatory relationship

D
Both A and B

Solution

Rhizobium cannot make its own food. So it often lives in the roots of gram, peas, moong, beans and other legumes and provides them with nitrogen.
In return, the plants provide food and shelter to the bacteria. They, thus, have a symbiotic relationship. Option A is correct.
Question 8
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Which life process is classified as autotrophic in some organisms and heterotrophic in others?

A
Hormonal regulation

B
Nutrition

C
Anaerobic respiration

D
Transport

Solution

Nutrition is classified as autotrophic and heterotrophic. Autotrophic organisms can synthesise their own food (e.g., green plants, blue-green algae and some bacteria). While some organisms exhibit a heterotrophic mode of nutrition as they are unable to synthesise their own food. They may be parasitic, saprozoic (animal) or saprophytic (plant) and symbiotic (many bacteria, fungi, algae).
Question 9
1 / -0

Leguminous plants are important in agriculture because

A
They are disease resistant

B
They have high amounts of proteins

C
They require less nitrogen for growth

D
Nitrogen fixing bacteria are symbiotically associated in them

Solution

Leguminous plants are important in agriculture because they contribute to nitrogen fixation. They contain symbiotic nitrogen-fixing bacteria within the nodules that produce nitrogen compounds that help the plant to grow. When the plant dies, the fixed nitrogen is released, making it available to other plants and this helps to fertilize the soil.
So the correct answer is 'Nitrogen-fixing bacteria are symbiotically associated in them'.
Question 10
1 / -0

What are outside raw materials used by an organism?

A
Food by heterotrophic organisms

B
Carbon dioxide, minerals and water by autotrophic organisms

C
Oxygen by all aerobic organisms

D
All of the above

Solution

Autotrophic organisms can synthesize their own food whereas heterotrophic organisms depend on autotrophs for their food supply. Green plants are the most common autotrophs. They synthesize sugars during the process of photosynthesis. These organisms absorb water and minerals from the soil and use the energy of the sun to synthesize sugars (carbohydrates). Heterotrophs like animals consume plants either directly (herbivores) or indirectly (carnivores). All living organisms carry on the process of respiration in which the biomolecules are broken down into simpler molecules and energy is released. The process of respiration can occur in the presence (aerobic) or absence of oxygen (anaerobic). Thus, the correct answer si option D.

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Nutrition in Plants Test - 15

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Nutrition in Plants Test - 15

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SHARING IS CARING

Question 1

(i) and (iv)

(ii) only

(ii) and (iii)

(i) and (ii)

Solution

Question 2

Cytoplasm

Chromosomes

Nucleus

Cell membrane

Solution

Question 3

We can see them with a microscope.

They can fit in our bodies.

They can reproduce quickly.

They can take in food and get rid of waste.

Solution

Question 4

Cell Wall

Genetic material

Cell membrane

Cytoplasm

Solution

Question 5

heterotrophs

partial heterotrophs

omnivores

partial omnivores

Solution

Question 6

Microscope

Microruler

Microlasers

All of the above

Solution

Question 7

Symbiotic relationship

Parasitic relationship

Predatory relationship

Both A and B

Solution

Question 8

Hormonal regulation

Nutrition

Anaerobic respiration

Transport

Solution

Question 9

They are disease resistant

They have high amounts of proteins

They require less nitrogen for growth

Nitrogen fixing bacteria are symbiotically associated in them

Solution

Question 10

Food by heterotrophic organisms

Carbon dioxide, minerals and water by autotrophic organisms

Oxygen by all aerobic organisms

All of the above

Solution

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