In this post, I am sharing the Class 12 Biology Chapter 19 Short Questions Notes PDF for the students of Intermediate Part 2. This chapter’s name is Growth and Development. Students can download the Class 12 Biology Chapter 19 Short Questions Notes PDF on their laptops or mobile. These Biology Notes are for all the boards working under the Punjab Board like Gujranwala Board, Lahore Board, Faisalabad Board, Multan Board, Rawalpindi Board, Sargodha Board, DG Kahn Board, and Sahiwal Board. Here are the complete FSC 2nd Year Biology Notes PDF chapters.
FSC Part 2 Biology Chapter 19 Short Questions Notes – Growth and Development
Differentiate between growth and development.
The permanent and irreversible increase in size of an organism as an it matures is called growth. The progressive changes which are undergone before an organism acquire its adult form constitute development.
What is open growth? In which organism it is present?
The plants have a growth pattern called open growth. The plant adds new organs such as branches, leaves and roots thoughtout the life.
Give some symptoms of aging.
Loss of hair pigment, development of small pigmented areas in the skin of face and arm, dryness and wrinkiling of skin, loss of agility, incease of weight due to fat deposition, poor vision and forgetfulness.
Give two causes of aging.
The cells of tissues have only a finite number of mitotic dividions. Hence the cells may have reached their finite number when the tissue or organ is fully grown. Spontaneous mutation may resuly in loss of cells and degeneration of tissues.
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