Question

School -- .Don.Bosco.High.School. ( Nikamul ) Tezpur CHAPTER -- 7 Getting to know plants Answer V. 1. Trees have bark because: a. It protects the inner part of the tree. b. It prevents water loss and and forms a barrier against organisms such as insects that damage the plants. c. It protects the tree from cold or warm weather. 3. Functions of the shoot system are: a. It bears branches, leaves, flowers and fruits ? b. It carries water absorbed by the roots to the rest of the plant. c. It carries food made by the leaves to all the parts of the plant. 4. Plants wilt when they do not get regular supply of water. This happens because they constantly lose water in the form of vapour through the stomata. 5. Plants that bear flowers are called flowering plants. For example, Rose plant. Plants tht do not bear flowers are called non- flowering plants. For example, ferns, mosses. Answer VI. 1. Plants prepare food in the leaves. The leaves receive water absorbed by the roots of the plant which swells up the stomata allowing carbon dioxide to enter. Leaves have chlorophyll pigment which traps sunlight energy to use water and carbon dioxide as raw materials o prepare sugar and produce oxygen gas. 2. Transpiration is the loss of water from the plants through the stomata in the form of water vapour in the atmosphere. Here is an experiment to demonstrate transpiration: If we select a twig with many leaves and tie a polythene bag over it for a day, we will observe tiny water droplets inside the bag which will come from the twig. 3. Page No. 75 Last two paragraphs .. 4. Page no. 72 parts of a typical leaf .. 5. Page no. parts of a flower ..​

Answer 1

Answer:

Activity 1 asks us to observe the stem of the various plants, look at the place from where branches appear and classify them.

Answer: We look at the various stems of different plants. Some are soft and can be easily bent while some are hard to bend. In some plants, branches appear at the ground while in some plant branches are at some height.