Plant Growth and Development — BIOLOGY STD 11 Science — Question

What is the rudimentary structure found in the collar region of Hemichordata called?

3CO₂ + 9ATP + 6NADPH + Water → glyceraldehyde 3 phosphate + 9ADP + 6NADP⁺ + 8Pi Analyse the above reaction and answer following quations:
How many molecules of ATP & NADPH are required to fix one molecule of CO₂?

Why do the chromosomes become short and thick in prophase?

How many molecules of carbondioxide, ATP and NADPH are required to make one molecule of glucose?

Indicate whether the following statements are true or false:
Glucose is actively reabsorbed in the proximal convoluted tubule.

Who presented the Sliding Filament Theory of muscle contraction?

Tell the roots found in monocotyledon plants.

What happens during asthmatic attacks?

Name few, called the specialised connective tissues?

How does the natural system of classification provide detailed information about the groups?