Transport in Plants — BIOLOGY STD 11 Science — Question

Besides Annelida and Arthropoda, the metamerism is exhibited by:

1. Cestoda.
2. Chordata.
3. Mollusca.
4. Acanthocephala.

Mention the two steps in glycolysis, where ATP is consumed.

Mention two conditions which allow the root pressure to occur.

Differentiate between a dicot (gram) seed and a maize grain.

Rahul's father bought an aquarium to home, while looking at the fishes, Rahul wondered that fishes, though small, can breathe efficiently in water. He wondered why do humans die of drowning. Next day, he asked his biology teacher about the same. The teacher explained that fishes have special respiratory organ, which allow them to breathe inside water. Rahul was amazed to know that even respiratory organs differ in different animal groups.

1. Give the name of the respiratory organ of fishes.
2. How do humans swim and breathe inside water?
3. Give the name of the respiratory organ of humans.
4. What values are displayed by Rahul?

Define the following: Hormone.

An egg laying mammal is:

1. Kangaroo.
2. Platypus.
3. Koala.
4. Whale.

Why are the classification systems changing every now and then?

1. Name the scientists who gave the scheme of glycolysis.
2. Mention the two steps where ATP is utilised in glycolysis.

In muscle contraction, which type of nerve is stimulated?