Biomolecules — BIOLOGY STD 11 Science — Question

Explain the process of formation of vascular cambium.

Give the cause for the Heart sounds.

Write the name of three diseases caused by fungi.

Compare the following:
Central neural system (CNS) and Peripheral neural system (PNS)

Explain the advantage of the complete partition of ventricle among birds and mammals and hence leading to double circulation.

Ruchi's father was not well for last 8 days. He gave pale look in his eyes and skin all over the body, when she saw his father's degrading health became worried and took him to the doctor. The doctor did the medical check up and found that he was suffering from jaundice.

1. How is Jaundice cause?
2. Mention the functions of RBCs.
3. What values are shown by Ruchi towards her father?

Eukaryotic cells have organelles which may
bound by a single membrane.
Group the various sub-cellular organelles into these categories.

While teaching in a classroom, teacher told students that cockroaches are omnipresent and they are useful as well as harmful for mankind. Ram found this interesting and asked many questions regarding the topic to his teacher.

1. Which features enable the cockroaches to thrive in almost all places?
2. How is it useful to humans?
3. What are the negative impacts of its presence in our surroundings?
4. What values does the Ram possess as a student?

Explain blood pressure and pulse.

Who discovered the nucleus? Write any five works of nuclear membrane.