7th Grade > Biology
NUTRITION IN PLANTS MCQs
Total Questions : 117
| Page 10 of 12 pages
Answer: Option D. ->
chemical energy
:
D
:
D
Photosynthesis is the process of converstion of light energy to chemical energy. This chemical energy is stored in food. Photosynthesis occurs in green plants and algae. Plants need light energy, CO2 and H2O to make sugar in the presence of chlorophyll. The process of photosynthesis takes place in the chloroplasts which contains chlorophyll.
Answer: Option D. ->
sun
:
D
The solar energy is captured by leaves and is stored in the plants as food. This food is consumed by animals. All animals, either directly or indirectly depend on plants for their nutrition. Thus, sun is the ultimate source of energy for all living organisms.
:
D
The solar energy is captured by leaves and is stored in the plants as food. This food is consumed by animals. All animals, either directly or indirectly depend on plants for their nutrition. Thus, sun is the ultimate source of energy for all living organisms.
Answer: Option B. ->
False
:
B
:
B
In a cell, the nucleus is surrounded by a jelly- like substance called cytoplasm. It is mainly composed of water, salts and proteins. Cell membrane is the outer boundary which encloses the cell. Hence, this statement is false.
Answer: Option A. ->
True
:
A
:
A
In the presence of starch, iodine changes its color from brown to blue-black or purple. So, iodine can be used to test the presence of starch.
Answer: Option A. ->
nitrogen
:
A
Pitcher plants usually grow in areas deficient in nitrogen. Nitrogen is an important component required by plants. These plants are green and make their food by photosynthesis but to meet their nitrogen needs, they feed on insects.
:
A
Pitcher plants usually grow in areas deficient in nitrogen. Nitrogen is an important component required by plants. These plants are green and make their food by photosynthesis but to meet their nitrogen needs, they feed on insects.
Answer: Option A. ->
True
:
A
Desert plants have different kinds of adaptations to cope up with extreme conditions like high temperature, water scarcity, etc. The cactus leaves are modified into sharp needle-like structures to minimize the loss of water due to evaporation.
:
A
Desert plants have different kinds of adaptations to cope up with extreme conditions like high temperature, water scarcity, etc. The cactus leaves are modified into sharp needle-like structures to minimize the loss of water due to evaporation.
Answer: Option C. ->
saprotrophic
:
C
Fungi secrete digestive juices on the dead and decaying matter and convert it into a solution. Then they absorb the nutrients from it. This mode of nutrition in which organisms take in nutrients in solution form from dead matter is called saprotrophic nutrition.
:
C
Fungi secrete digestive juices on the dead and decaying matter and convert it into a solution. Then they absorb the nutrients from it. This mode of nutrition in which organisms take in nutrients in solution form from dead matter is called saprotrophic nutrition.
Answer: Option C. ->
chlorophyll
:
C
:
C
Green leaves have a pigment called chlorophyll. Chlorophyll absorbs light energy which is used for photosynthesis. Chorlophyll is the pigment that imparts green color to the plants.
Answer: Option B. ->
heterotrophs
:
B
:
B
Animals and most of other organisms cannot prepare their own food. They consume food prepared by the plants. So, they are called heterotrophs (heteros = other, trophism = nutrition).
Answer: Option C. ->
transpiration
:
C
Transpiration is the process through which plants lose water through stomata. Stomata are usually present on the underside of the leaves. It is essentially evaporation of water from the leaves of the plants.
:
C
Transpiration is the process through which plants lose water through stomata. Stomata are usually present on the underside of the leaves. It is essentially evaporation of water from the leaves of the plants.
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