Animal Kingdom — BIOLOGY STD 11 Science — Question

Describe chemiosmosis.

Try to collect all the currently accepted meanings for the word ‘species’. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand, and bacteria on the other hand.

Distinguish between Competitive and Allosteric inhibition.

Differentiate between prophase and prophase I.

During summer vacation, Nitin was studying inside the home. He said to his mother that he is feeling hot inside. His mother advised him to sit under a tree in the garden to beat the heat. He was surprised after listening to his mother's opinion as temperature was much high outside than inside. He still went out and started studying under the tree. After few hours, he came to his mother and asked about it. His sister who was a biology student of class XI heard their conversation and told his brother that it is all due to the phenomenon of transpiration.

1. What is transpiration? Also indicate the transpiring organ of the plant.
2. What are the general factors that affect transpiration?
3. Name different types of transpiration.
4. What values are displayed by Nitin's sister's character?

Which are called complex permanent tissues? Describe in detail.

Draw a diagram of a flowering plant and write functions of different parts.

What is aestivation? Make a picture of the flowers of mustard plant (family Brassicaceae) and write the flower formula.

Various types of transport mechanisms are needed to fulfil the mineral requirements of a plant. Why are they not fulfilled by diffusion alone?