Getting to Know Plants

Q1. True / False

       a.   All plants are of same size. False

       b.   Photosynthesis takes place in the absence of light. False

       c.   Transpiration and Photosynthesis are the main function of leaf. True

       d.   Roots hold the plant above the soil. False

       e.   Pistil is the female part of the flower. True

Q2. Fill in the blanks.

       a.   Major parts of plants are the stem, branches, roots, leaves and flowers.   

       b.   Plants can be classified into three categories: herbs, shrubs and trees.

       c.   Photosynthesis is the process by which leaves prepare food for the plant.

       d.   Two types of roots are tap root and fibrous root.

       e.   Stamen is the male part of the flower.

Q3. What are ovules?

Ans. Small bead like structures inside the ovary are called ovules.

Q4. Name two flowers with joined petals.

Ans. Datura and Bell shaped flower

Q5. Name two flowers with joined sepals.

Ans. China rose and Cotton

Q6. Name two flowers with separated sepals.

Ans. Rose and Jasmine

 
Q7. From where do potatoes get the starch?

Ans. Potatoes get the starch from other parts of the plant and store it.

Q8. How are leaves attached to the stem?

Ans. The leaves are attached to the stem by petiole.

Q9. Write 5 examples of edible roots.

Ans. carrot, radish, sweet potato, turnip and tapioca

Q10. The following picture shows two types of root. Write the type of roots for the following figures.

Q11. How do plants exchange gases with the environment?

Ans. Exchange of gases takes place in the plants mainly through the tiny pores on the surface of their leaves called stomata.

Q12. Do the flowers with joined sepals have petals that are separate or are they joined together?

Ans. If the sepals of flowers are joined together, then its petals may or may not be joined together.

Q13. Do the flowers with joined petals have stamen joined to the petal?

Ans. If the petals of flowers are joined together, then its stamen may or may not be joined to the petal.

Q14. What type of roots the plants with parallel venation in the leaves likely to have?

Ans. Plants with parallel venation in the leaves likely to have fibrous roots. For example: grass, wheat, maize, etc. have fibrous roots with parallel venation.

 
Q15. How stem is like a two way street?

Ans. Stem is like a two way street as it conducts water and minerals from the roots to the leaves and transport food prepared by the leaves to the other part of the plant.

Q16. Do all the leaves have petioles?

Ans. No, all the leaves do not have petioles. Some leaves have a petiole, which attaches the leaf to the stem and some leaves that do not have petioles are directly attached to the plant stem.