Justify the following statements on the basis of external features
(i) Underground parts of a plant are not always roots
(ii) Flower is a modified shoot

Presence of keystone species and link species of plants are essential for the existence of diversity of organisms .Justify the following statements based on this. a. Fig tree is a keystone species of plant community. b. Mycorrhizal fungi in soil as a link species.

Study the following statements regarding the anatomy of isobilateral leaf. (i) Stomata are equally distributed on both the surfaces (ii) certain adaxial epidermal cells are modified into bulliform cells in grasses. (iii). The vasuclar bundles are radial (iv). Phloem is adaxially placed. Which of the above statements are correct?

Read the following statements and select the correct option. Statement 1 : Unisexual flowers are either staminate flowers or pistillate flowers. Statement 2: Both monoeious and dioeious plants have unisexual flowers.

Read the following statements and fill up the blanks with correct option. (i) Total soil water content in soil is called _____ (ii) Soil water not available to plants is called. _____ (iii) Soil water available to plants is called. _____

Study carefully the following statements and select the incorrect one(s). (i). Lateralroots develop from pericycle. (ii) . Endodermis is the innermost layer of cortex (iii). Sapwood is the central, dark coloured, non-conducting part of secondary xylem.

Write the component statements of the following compound statements. Mention the connecting world. (i) It is raining and it is cold. (ii) Zero is a positive or negative number.