Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Differentiate between prokaryotic and eukaryotic cells.

What are neurotransmitters? Where are they present? Mention their functions in our body.

Biology teacher while taking class on respiration, told students that respiration is the characteristic feature of living beings, whether it is plant or animal. Ankita listened this, argued with her teacher and asked that plants do not have any structures for respiration then how can they respire. Teacher was impressed by Ankita's question and explained the students about respiration in plants.

1. In which cell organelle does respiration take place?
2. What compound is known as energy currency of the cell?
3. Where does aerobic and anaerobic respiration take place in a cell?
4. Which good quality is possessed by Ankita and her teacher?

Which of the following is an incorrect statement?

1. There is a common opening for both digestive system and excretory system in Aves.
2. Forelimbs are modified for flight in Bats.
3. Bioluminescence is also shown by an insect.
4. Open digestive system is more advanced than the closed digestive system.

Differentiate between stroma and grana of chloroplasts.

What is interstitial fluid? Mention its importance in the body.

Mention two conditions which allow the root pressure to occur.

List the organs of human alimentary canal and name the major digestive glands with their location.

If alpha and beta cells in the Islets of Langerhans of the pancreas are rendered inactive in an individual, explain the affected processes in the organism.

Name the four elements needed by only some higher plants, as mineral nutrients.