Excretion and Osmoregulation — Biology STD 11 Science — Question

Which of the following compound is the acceptor of Acetyl Co-A in Krebs cycle?

Chromosome number of a cell is almost doubled up during _______ .

The reaction centre of PS-II is ________ .

When the flower is epigynous, the ovary is said to be

Arboretum is :

Tubular secretion does not take place in ________.

In Krebs cycle, dehydration of substrate occurs

Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in:

1. Organ system level of organization
2. Bilateral symmetry
3. True coelomates with segmentation of body Select the correct option of animal groups which possess all the above characteristics.