PART - 1 - Unit III : CH - 10 Cell Cycle and Cell Division — BIOLOGY STD 11 Science — Question

Which part of the alimentary canal produce local digestive hormones? What would happen if these hormones are not produced?

Imagine a situation if there was no meiosis. Then what would have happened to the next generation?

One of the ABO blood groups is sometimes called the universal donor. Which group do you think it is and why?

Describe Absolute and relative growth rates.

Mention the modification or structural features of ileum, which make it suitable for absorption of nutrients.

Lalit, student of class XI always likes to have junk food. His mother insists him to have fibre rich fruits and vegetables, because they are good for health. Lalit always ignored his mother's advise. One day, while his biology teacher was teaching about the digestive system and mechanism of digestion. She also explained about the food one should eat (Le., balanced diet) Lalit remembered his mother's advice and asked his teacher about the importance of fibre rich food in one's diet.

1. According to you, what is the advantage of having fibrous material in our food?
2. Name the term used to describe fibrous materials which is indigestible in nature.
3. Name any four fibre rich fruits.
4. What values are reflected through Lalit's character?

What is the structural and functional unit of kidney called? Make a labelled diagram of it.

Classify the following into nitrogen bases, nucleosides and nucleotides.

1. Cytosine.
2. Adenosine.
3. Uridine.
4. Guanylic acid.

Male mosquitoes usually feed on:

1. Garbage.
2. Human blood.
3. Flower sap.
4. All of the above.

How are tracheids different from vessels found in angiosperms? Give a labelled sketch of each of them.