Animal Kingdom — BIOLOGY STD 11 Science — Question

In botanical gardens and tea gardens, gardeners trim the plants regularly so that they remain bushy. Does this practice have any scientific explanation?

Classify bones on the basis of texture.

What is the most common liverwort? Draw itswell-labelled diagram. What is the nature of itsthallus?

Arya went to a bird sanctuary with her family. She saw numerous birds there and was amazed by the colourful and vibrant world of flying birds. She also saw ostriches there but they were not flying seeing this, she asked her mother who is an ornithologist) why only birds can fly, while all other animals cannot. She also asked her mother about the birds that cannot fly.Her mother explained Arya about birds and their characteristic features. Arya felt happy knowing knowledge:

1. Which characteristic features of Aves.
2. What are the flight adaptations of birds?
3. Name few flightless birds.
4. What values are shown by Arya?

State economically important uses of: heterotrophic bacteria

Describe the structure of the rib cage of the human.

Explain the structure of bacteriophage with the help of well-labelled diagram.

You have heard about several insectivorous plants that feed on insects. Nepenthes or the pitcher plant is one such example, which usually grows in shallow water or in marsh lands. What part of the plant is modified into a ‘pitcher’? How does this modification help the plant for food even though it can photosynthesize like any other green plant?

Explain the terms:

1. Basidiocarp.
2. Basidia.
3. Basidiospores.