Q31 of 367 Page 73

What is phloem tissue? Phloem contains two types of cells joined side by side. Name these two types of cells. State whether these cells are living or dead.

Phloem is a vascular tissue which transports food from leaves to the other parts of the plant. Phloem is made up of many cells joined end to end to form long tube. Phloem contains two type of cells which are associated with each other. These cells are sieve tubes and companion cell. Both cells are living.


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29

Fill in the following blanks with suitable words :

(a) Gums and resins are the ................. products of plants.


(b) Bowman's capsule and tubule taken together make a...................


(c) The organs which extract the nitrogenous wastes from the blood are ..................


(d) The extracellular fluid which always flows from body tissues to the heart is called..................


(e) The ............blood cells make antibodies whereas............. blood cells help in respiration.

 30

What is xylem tissue? Name the two kinds of cells in xylem tissue. State whether these cells are living or dead.

 32

What is transpiration?

 32

What do you mean by 'translocation' with respect to transport in plants?