Life Processes Worksheet-14

Life Processes Worksheet-14

 

  1. Mention any three points in which photosynthesis and respiration in plants are opposite to each other.

 

  1. What is the importance of ciliated and mucous cells in the living layer of trachea, bronchi and bronchioles?

 

  1. How does respiration occur in the stem of the plant?

 

  1. Show with a schematic diagram the different products of photosynthesis.

 

  1. Explain the process of photosynthesis occurring during Hill reaction.

 

  1. 'Structure of leaf is complementary to its function'. Explain the statement.

 

  1. If all the green plants are removed from the earth, life cannot be sustained. Comment.

 

  1. What is bile? What are its constituents?

 

  1. 'Plant proteins are nutritionally inferior to animal protein'. Comment.

 

  1. Draw a schematic diagram to show the opening and closing of stroma.

 

  1. How does exchange of gases occur in roots?

 

  1. Why is digestion essential for living beings?

 

  1. What role do teeth play in the digestive system of man?

 

  1. Explain why more amount of energy is produced during aerobic respiration.

 

  1. Give the common features of respiratory organs of animals.

 

  1. Differentiate between saprophyte and parasite.

 

  1. Why does high temperature inhibit photosynthetic action?

 

  1. Which enzyme initiates the digestion of proteins? Name the other enzyme produced by the same gland.

 

  1. How is carbon dioxide obtained by (a) aquatic plants and (b) terrestrial plants?

 

  1. How does the midgut help in digestion?

 

  1. Name the first digestive organ that is associated with the breakdown of proteins in humans. What are its three releases?

 

  1. State the difference between respiration in plants and animals.

 

  1. What is dental caries?

 

  1. Write a short note on ATP.

 

  1. (a) Which simple food is prepared first in the process of photosynthesis? (b) Name the food which gets stored in the plant leaves subsequently.

 

  1. Draw a neat labelled diagram of the structure of a chloroplast.

 

  1. Name the first digestive organ that is associated with the breakdown of proteins in humans. What are its three releases?

 

  1. Why leaves become yellow in the absence of light?

 

  1. Why is pancreas considered as a heterocrine gland?

 

  1. Mention the role of the valves in maintaining blood flow in the heart.