Other Modes of Nutrition

Q.

Explain the parasitic mode of nutrition. Give two examples and mention why they are parasitic. [5 MARKS]

Q.

What is the relation between algae and fungi in a lichen?

Q.

Why can animals not make their food from carbon dioxide and water in presence of light?

Q. Which among the following plant does not contain chlorophyll?

1. Pitcher plant
2. Cuscuta
3. Algae
4. Rose plant

Q. Assertion [A]: Root nodules provide shelter to certain bacteria.
Reason [R]: Bacteria present in root nodules helps in fixing nitrogen for the plant.

1. A is true and R is false.
2. A is false and R is true.
3. Both A and R are true and R is the correct explanation for A.
4. Both A and R are true but R is not the correct explanation for A

Q. Which of the following plant grows on dead and decaying matter?

1. Cuscuta
2. Drosera
3. Mushroom
4. Algae

Q.

Can you give me a name? Solve each of the following riddles by writing the name of the organism and its mode of nutrition. One riddle is solved to help you. (a) I am tall but I cannot move. I am green and can prepare my own food. tree, autotroph (b) I live in water; people keep me in an aquarium and feed me. , (c) I am small and I can fly. I disturb your sleep, bite you and suck your blood which is my food. , (d) I am white and soft. I grow well in the rainy season. Children pluck me from the ground and admire me. I absorb nutrients from decomposed dead parts of plants and animals in the soil.

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. Both autotrophic and insectivorous plants prepare their own food.

1. True
2. False

Q. Which of the following statement(s) is/are true about lichen?
A. Lichen is a single organism.
B. Lichens are pollution indicators.
C. Fungi provides anchorage and moisture for algae.
D. Algal part in lichen are parasitic.

1. A
2. B
3. C
4. D

Q. Which of the following plant have nodules in their roots?

1. Cuscuta
2. Mushroom
3. Drosera
4. Pulses

Q. Match the following.
$\begin{array}{cc}\text{Column A}& \text{Column B}\\ \left(a\right)\text{Cuscuta}& \left(i\right)\text{Saprophytic plant}\\ \left(b\right)\text{Venusflytrap}& \left(ii\right)\text{Symbiotic plant}\\ \left(c\right)\text{Lichen}& \left(iii\right)\text{Parasitic plant}\\ \left(d\right)\text{Mold}& \left(iv\right)\text{Insectivorous plant}\end{array}$

1. a-ii, b-iii, c-i, d-iv
2. a-iii, b-iv, c-ii, d-i
3. a-iii, b-iv, c-i, d-ii
4. a-iii, b-i, c-iv, d-ii

Q. Special roots present in parasitic plants are called .

Q.

Which blood vessels have the thinnest walls?

Q.

Give one word for the following:

The thinnest blood vessels in the body.

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

1. True
2. False

Q.

Different between insectivorous and symbiotic plants?

Q.

Tannins are the nitrogenous waste substances of plants which are used as medicines for malaria.

1. True

2. False

Q. Insectivorous plants have pigment in their leaves and they grow in deficient soil.

Q. Which among the following statements are true?

1. Cuscuta has haustorial roots
2. Mushroom has chlorophyll
3. Lichens are the association of fungi and algae
4. Venusflytrap is an insectivorous plant

Q.

_____________ are thin-walled upper chambers of the heart.

Q. Fungi are likely to grow on bread kept in moist air for a few days.

1. True
2. False

Q. Which among the following statements are true about insectivorous plants?

1. They contain chlorophyll.
2. They grow in iron deficient soil.
3. They grow in nitrogen deficient soil.
4. Their leaves are modified.

Q. The algal part of lichen prepares food for both fungi and algae.

1. False
2. True

Q.

Peas are ___ plants.

Q. Which mode of nutrition is seen in the plants of the Dal family?

1. Saprophytic
2. Insectivorous
3. Parasitic
4. Symbiotic

Q. Which of the following statement(s) regarding the plant shown below is/are correct?

1. This type of nutrition fulfills both the needs of algae and the fungi.
2. The fungi provides water, minerals and shelter to the algae.
3. The algae does not gain anything from this relationship.
4. The algae provides food and nutrients to the fungi.

Q.

Why are carnivorous plants dependent on insects for their nutritional requirements? Give two examples. [3 MARKS]

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

1. Thin
2. Narrow
3. Thick
4. Broad

Q.

Give a detailed note on symbiosis and how it is beneficial for organisms? [5 MARKS]