Biomolecules — BIOLOGY STD 11 Science — Question

Give the major anatomical and physiological differences between Sympathetic system and Parasympathetic system.

Ria went to see the zoo in her town with her parents and saw many wild animals, their food habits, behaviour, etc. She saw that there was a wide variety of animal life in the zoo. But she was amazed to see that the board placed in front of lion cage and monkey place which tells that both were mammals. However, she thought that they were totally different in appearance.

1. Why lions and monkeys are considered to be mammals?
2. Explain the scientific reason to maintain a zoological park.
3. Is there any similar place to see a variety of plants? If any, then name some.
4. What values are shown by Ria?

What are the main differences between smooth muscles, skeletal muscles and cardiac muscles?

Write the features that distinguish between the two,
Plasma and Serum.

Complete the flow chart for cyclic photophos-phorylation of the photosystem.

What controls the movement of lungs in humans (mammals)? Explain with diagram.

Distinguish anaphase of mitosis from anaphase-I of meiosis.

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?

Write any four differences between chordates and non-chordates.

What is the importance of plasma proteins?