Autotrophic Nutrition in Plants

Q.

What is meant by saprotrophic nutrition?

Q.

Stomata are surrounded by __ cells.

Q. Stomata are generally present on the surface of _____.

1. flower
2. leaves
3. roots
4. fruits

Q. In Opuntia, the leaves of areoles are modified into ___.

1. tendrils
2. scales
3. glochidia
4. spines

Q.

Is a sunflower a heterotroph?

Q. Match the following parts of a plant with their functions.

1. Gaseous exchange
2. Transportation
3. Water absorption
4. Photosynthesis

Q.

Gaseous exchange in plants occurs through tiny openings present in the leaves known as _____.

1. stomata
2. spores
3. nodules
4. stalk

Q. Match the following modes of nutrition to the respective organism.

1. Algae
2. Amoeba
3. Tapeworms

Q.

Carbon is incorporated into life-forms through___________?

Q. How do cactus fulfill their nutritional requirements

Q.

What functions are common to stomata and alveoli?

Q.

Carbohydrates are made of

1. Oxygen

2. Carbon

3. Hydrogen

4. All of these

Q. What is stomata? Mention any two functions of stomata. [3 MARKS]

Q.

Carbohydrates are comprised of ___ .

1. carbon and hydrogen

2. carbon and oxygen

3. hydrogen and oxygen

4. carbon, hydrogen and oxygen

Q.

Where can saprotrophic nutrition be seen?

Q. Plants take in ___ and give out ___ as a byproduct.

1. O₂, CO₂
2. CO₂, O₂
3. O₂, NO₃
4. CO₂, NH₄

Q. Plants take in ___ and give out ___ as a byproduct during photosynthesis.

1. O₂, CO₂
2. CO₂, O₂
3. O₂, NO₃
4. CO₂, NH₄

Q.

How do cactus fulfill their nutritional requirements?

Q. Plants take in ___ and give out ___ as a byproduct.

1. O₂, CO₂
2. CO₂, NH₄
3. CO₂, O₂
4. O₂, NO₃

Q.

Algae can prepare their own food by photosynthesis.

1. True

2. False

Q. Plants take in ___ and give out ___ as a byproduct.

1. O₂, CO₂
2. CO₂, O₂
3. O₂, NO₃
4. CO₂, NH₄

Q. All the organisms listed below are heterotrophs except _________ .

1. human
2. Cuscuta
3. algae
4. vulture

Q. Photosynthesis occurs with the help of a molecule present in chloroplasts called .

1. Haemoglobin
2. Chlorophyll
3. Melanin
4. Carbohydrate

Q. Oxygen is the byproduct of photosynthesis.

1. False
2. True

Q. Which of the following is/are the raw material(s) required for photosynthesis?

1. Carbon dioxide
2. Sunlight
3. Chlorophyll
4. Water

Q. The mode of nutrition in which organisms take in nutrients from dead and decaying matter is called ______ nutrition.

1. saprotrophic
2. autotrophic
3. parasitic
4. symbiotic

Q. Match the following parts of a plant with their functions.

1. Gaseous exchange
2. Transportation
3. Water absorption
4. Photosynthesis