Adaptations for Ingestion of Food in Plants

Q. What is Host plant

Q.

Explain the parasitic mode of nutrition with an examples? [5 MARKS]

Q. Cuscuta uses _____ for abosrbing nutrients from the host plant.

1. haustorial roots
2. fibrous roots
3. submerged roots
4. needle-like leaves

Q. Which of the following plant shows parasitic mode of nutrition?

1. Mango
2. Cuscuta
3. Cactus
4. Conifers

Q. What is the type of nutrition found in fungi, lichen, amarbel and pitcher plant?

Q. Which of the following plants fulfil their nitrogen requirements by consuming insects?

1. Cuscuta
2. Pitcher plant
3. Mango
4. Venus flytrap
5. Drosera

Q. Plants like venus fly trap fulfil their nitrogen requirement by:

1. Sucking nutrients through haustorial roots.
2. Trapping and consuming insects.
3. Killings plants growing around it.
4. Taking if from the air.

Q.

Q1 The non green plants that live in or on other living organisms

and derive their food from them

Q2 Process of taking food by an organism and it's utilization by the body

Q3 Leaves which are partly green and partly non green plant

Q4 The components of food those are necessary for the body

Q5 The green pigment found in the leaves of the plants that traps energy from the sun ligh

Q. Which of the following plants does not consume insects for its nitrogen requirement?

1. Venus flytrap
2. Cuscuta
3. Pitcher plant
4. (a) and (c) above.

Q. Identify the following:

(i) Mode of nutrition
(ii) Role of roots called haustoria

from the yellow coloured plant shown in the image.

1. (i) Autotrophic; (ii) To exchange gases and nutrients.
2. (i) Autotrophic; (ii) To absorb water and food from host plants.
3. (i) Parasitic; (ii) To absorb water and food from host plants.
4. (i) Parasitic; (ii) To absorb oxygen from host.

Q. Plants like venus fly trap fulfil their nitrogen requirement by:

1. Sucking nutrients through haustorial roots.
2. Trapping and consuming insects.
3. Killings plants growing around it.
4. Taking if from the air.

Q. Give two examples of root parasites of plants. Mention the special structures present in them to draw the nutrients from the host plant.

Q. Which of the following plants does not consume insects for its nitrogen requirement?

1. Venus flytrap
2. Cuscuta
3. Pitcher plant
4. (a) and (c) above.

Q.

a venus flytrap is a green plant. It contains chlorophyll and can therefor make its own food. Then why does it need to take in insects for its nutrition?

Q. Haustorial roots are found in

1. pitcher plant
2. cuscuta
3. drosera
4. cactus

Q. Assertion :Deficiency of sulphur causes in plants Reason: Sulphur is a constituent of chlorophyll, proteins and nucleic acids.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Largest flower Rafflesia is a

1. Total stem parasite
2. Total root parasite
3. Partial stem parasite
4. Partial root parasite

Q. Which of the following is/are the characteristic feature(s) of cuscuta?

1. Absence of leaves
2. Insectivorous
3. Presence of sucking roots
4. Presence of flat and wide leaves

Q. 'Regurgitated by the parent birds' means ________.

1. Chewed and fed
2. Digested and brought back
3. Swallowed and brought back
4. Chewed and spat out

Q.

One word answers:

Name a plant that, has both autotrophic and heterotrophic modes of nutrition.

Q.

Pitcher plants feed on insects as they grow in:

1. phosphorus deficient soil.

2. sulfur deficient soil.

3. potassium deficient soil.

4. nitrogen deficient soil.

Q. Which of the following plants fulfil their nitrogen requirements by consuming insects?

1. Cuscuta
2. Pitcher plant
3. Mango
4. Venus flytrap
5. Drosera

Q. Haustorial roots in cuscuta helps the plant in:

1. The exchange of gases and nutrients from host.
2. Providing protection against the predators.
3. Absorbing nutrients from the host plant.
4. The trapping of insects and extracting nutrients.

Q. Drosera derives nutrition through its haustorial roots.

1. False
2. True

Q. Cuscuta uses _____ for abosrbing nutrients from the host plant.

1. haustorial roots
2. fibrous roots
3. submerged roots
4. needle-like leaves

Q. The pitcher plant is heterotrophic in nature and does not perform photosynthesis.

1. False
2. True