Plant Kingdom — BIOLOGY STD 11 Science — Question

Differentiate between the gametophyte of bryophytes and that of pteridophytes.

After writing the names of any five false fishes, write there zoological name in front of them.

What are mesosomes and what its use in bacterial cell?

Write a short note on the following: (1) Climactic respiration (2) Bakanae (Foolish Seedling).

Expand the following:

1. NAAL
2. IBA
3. 2, 4-D
4. ABA

Avantika, who works in a publication house suffered from severe back pain, for the last three months. She visited a doctor, who explained that it was due to her wrong sitting posture during the office hours. He also suggested her that she should avoid long working hours continuously.

1. List two disorders that may be caused by wrong sitting posture.
2. Write the vertebral formula of humans.
3. What precautions should be taken to avoid such problem?
4. What value is shown by Avantika?

Name the factors that affect the binding of oxygen to haemoglobin to form oxyhaemoglobin.

What makes species a basic taxonomic category?

Meiontn the characteristic fees oaturf the sieve tube members of phloem.

Write the name of any one aminoacid, sugar, nucleotide and fatty acid.