Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

Vicky's mother was very concerned about his son. She always used to give him advices on how he should study, what is good for his health, and about everything. One day Vicky saw some, birds flying independently and asked his mother that why don't animals take care of their young ones like humans. Her mother smiled and explained that parental care is also well-developed in some animals.

1. Explain parental care in mammals.
2. Which other animals show parental care and how?
3. What does parental care indicate? bine
4. What values are shown by Vickey's mother?

Find and write down structures of 10 interesting small molecular weight biomolecules. Find if there is any industry which manufactures the compounds by isolation. Find out who are the buyers.

Write the names of the products formed on incomplete oxidation of glucose molecule and write any four importance of respiration.

Neurospora- an ascomycetes fungus has been used as a biological tool to understand the mechanism of plant genetics much in the same way as Drosophila has been used to study animal genetics. What makes Neurospora so important as a genetic tool?

A gardener finds some broad-leaved dicot weeds growing in his lawns. What can be done to get rid of the weeds efficiently?

Describe the arrangement of floral mem-bers in relation to their insertion on thalamus.

Briefly describe the following:
Atherosclerosis.

Explain the mechanism of urine formation.

What is called amphibolic path? Write any four differences between Respiration and Photo-synthesis.

Give the structural formula of:

1. Adenine.
2. Adenosine.
3. Adenylic acid.