a. Rods absorb light throughout the visual spectrum but confer only gray tone vision.
Explanation:
Rods and cones are the two types of photoreceptors present in the eyes. Rods are responsible for night vision or the vision in dim light. Rods do not provide color vision. Therefore, only black, white, and all shades of gray are seen in dim light.
In complete darkness, full regeneration of cone photopigments is delayed and the eyes are adapted to the darkness first. Rhodopsin is the pigment of rods. It regenerates more slowly and can detect all the colors of the light but does not provide color vision. Therefore, irrespective of the detection of a much dimmer light, threshold flashes appear gray-white only because only the rods are functioning.
When the cell engulfs large fragments of matter, it is called phagocytosis. The correct option among all the options that are given in the question is the fourth option or the last option. It is basically a process through which certain living cells by the name of phagocytes engulf other cells or particles. I hope it helps you.
The chromosomes would not be duplicated and meiosis would not be able to be completed after meiosis 1 (meiosis 1 could still occur as the gametes go from diploid to haploid).
