Animal Kingdom — BIOLOGY STD 11 Science — Question

Answer the following with reference to the anatomy of dicot root:

1. Where is pericycle located?
2. How are xylem vessels arranged?
3. What do you call such an arrangement?
4. Which type of cells constitute the cortex?

What is the site of gaseous exchange in an insect?

What is special about tissue present in the heart?

Match the following

	Column I		Column II
a.	Cristae	i.	Flat membranous sacs in stroma.
b.	Cisternae	ii.	Infoldings in mitochondria.
c.	Thylakoids	iii.	Disc-shaped sacs in Golgi apparatus.

How is the study of plant anatomy useful to us?

Neha planned to go the lakeside for picnic with her friends. Suddenly they noticed a man drowning in the lake. Everyone was frightened, but Neha asked them to stop panicking and take the man out of water. After the man was rescued, he was found unconscious. Neha then suggested that mouth to mouth artificial respiration should be given to save the man. One of her friend did as she guided.

Finally, the man was saved. He thanked Neha and her friends for their help.

1. Why is artificial respiration given?
2. Can artificial respiration bring back a person to consciousness even after death?
3. What values are shown by Neha?

Explain arithmetic growth in plants.

Does the growth pattern in plants differ from that in animals? Do all the parts of plant grow indefinitely? If not, name the regions of plant, which can grow indefinitely.

Why does the interior of bacterial cell appear simple and granular? Which components make cell envelope of bacterial cell? What gives gummy or sticky trait to bacterial cells and if it is not essential for survival, what are its functions?

How do different senses work in frog? Explain in brief.