Science

Getting to Know Plants

Question:

What is the function of a stem in a plant?

Answer:

A stem performs following functions:
(i) The stem and its branches hold leaves to get maximum sunlight.
(ii) It transports water from roots to different parts of the plant.
(iii) It transports food from leaves to different parts of the plant.
(iv) It bears leaves, flowers and fruits.

 

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Getting to Know Plants

Q 1.

What is transpiration?

Q 2.

Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), china rose.

Q 3.

Name the part of the plant which produces its food. Name this process.

Q 4.

Where does the photosynthesis take place in plants?

Q 5.

What are tap roots?

Q 6.

What are lateral roots?

Q 7.

What are sepals? What are their functions?

Q 8.

Name a plant that eats insect.

Q 9.

Does the stem prepare food for any plant?

Q 10.

Correct the following statements and rewrite them in your notebook.
(a) Stem absorbs water and minerals from the soil.
(b) Leaves hold the plant upright.
(c) Roots conduct water to the leaves.
(d) The number of sepals and petals in a flower is always equal.
(e) If the sepals of a flower are joined together, its petals are also joined together,
(f) If the petals of a flower are joined together, then the pistil is joined to the petal.

Q 11.

What are herbs? Give two examples.

Q 12.

What is the relation between leaf venation and the type of roots?

Q 13.

What are petals? Why are they generally coloured?

Q 14.

How many kinds of plants are there?

Q 15.

Define petiole.

Q 16.

Name the part of the plant which produces its food. Name this process.

Q 17.

Name two plants that belong to herbs.

Q 18.

What is leaf venation?

Q 19.

What are weeds?

Q 20.

What do you mean by leaf venation? Explain various types of leaf venation with example.

Q 21.

Give two examples of trees.

Q 22.

Give names of two plants which have tap root.

Q 23.

Explain the main functions of leaf.

Q 24.

Leaves need oxygen and carbon-dioxide (for photosynthesis). How do they get these gases?

Q 25.

Explain that sunlight is essential for photosynthesis.

Q 26.

Can you find a plant in your house or in your neighbourhood which has a long but a weak stem? Write its name. In which category would you classify it?

Q 27.

If a plant has leaves with reticulate venation, what kind of roots will it have?

Q 28.

Name two flowers, each with joined and separates sepals.

Q 29.

What is lamina?

Q 30.

What are fibrous roots?

Q 31.

Does the stem prepare food for any plant?

Q 32.

What are shrubs? Give two examples.

Q 33.

What are trees? Give two examples.

Q 34.

What are unisexual and bisexual flowers?

Q 35.

Why does white flowers bloom at night?

Q 36.

What is the function of a stem in a plant?

Q 37.

If a plant has fibrous root, what type of venation are its leaves likely to have?

Q 38.

Give two examples of shrubs.

Q 39.

What is midrib?

Q 40.

Where does the photosynthesis take place in plants?

Q 41.

Name various parts of stamen.

Q 42.

Classify plants and give an example of each.

Q 43.

What are creepers? Write an example.

Q 44.

What are climbers?

Q 45.

What do you mean by a complete and incomplete flower?

Q 46.

In which part of a flower you are likely to find the ovary?

Q 47.

Name the process by which leaves can prepare their food.

Q 48.

What are the raw materials for photosynthesis?

Q 49.

Name two plants which have fibrous root.

Q 50.

What are unisexual and bisexual flowers?