Name: Fertilisers
Uploaded: 2019-07-19
Duration: 4 min 31 s
Description: To grow a healthy crop along with water, nutrients are added to the soil in the form of fertilisers. Let us learn about these fertilisers in detail.

Question

Solve the crossword puzzle with the help of clues given.

ACROSS

1. A partially parasitic plant. (9)

2. Small pores on the undersurface of a leaf. (7)

3. Plant having Rhizobia in its root. (10)

DOWN

4. Both plant and meat-eaters. (9)

5. Plant or grass eaters. (9)

6. An insectivorous plant. (6)

7. Group of gram, peas, Beans and moong. (6)

8. Two organisms work together to benefit each other. (9)

Accepted Answer

ACROSS

1. The plants which perform photosynthesis but derive some other components like water and minerals from host plants are called partial parasitic plants. The example of a partial parasitic plant is mistletoe.

2. The small pores which are generally present on the undersurface of the leaves are called stomata. Exchange of gases in plants takes place through them. Stomata are surrounded by guard cells that regulate the opening and closing of stomata.

3. Symbiosis is a partnership between two organisms in which both partners get benefited from each other. Certain leguminous plants such as peas and beans live in a symbiotic relationship with Rhizobium bacteria. Rhizobium bacteria live in the root nodules of these plants and convert atmospheric nitrogen into plant-usable form. The plants in return provide food and shelter to the bacteria.

DOWN

4. Heterotrophs are organisms that depend directly or indirectly on plants for food, and they cannot manufacture their own food. Heterotrophs that depend on both plants and animals for food are called omnivores. For example, humans and dogs.

5. Animals that eat only plants or their parts are known as herbivores. E.g. Cow, Deer.

6. Plants that derive their food or nutrients by trapping and consuming insects are known as insectivorous plants. The sundew plant is an example, it traps prey in sticky hairs on their leaves.

7. Leguminous plants are plants that bear seeds in a pod. The family of gram, peas, beans and moong are called legumes. These plants live in a symbiotic relationship with Rhizobium bacteria.

8. Symbiosis or mutualism is a partnership between two organisms in which both partners get benefited from each other. Lichen is a typical example of symbiosis since it is a combination of an alga and a fungus. The fungus absorbs water and minerals to share with the alga whereas the alga supplies organic food to the fungus.

Important Questions on Food

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