Figure 2 shows some structures involved in the coordination of a reflex action. Figure 2
Describe how the structures shown in Figure 2 help to coordinate a reflex action.
The simplest arrangement of a reflex arc consists of the receptor, an interneuron (or adjustor), and an effector; together, these units form a functional group. Sensory cells carry input from the receptor (afferent impulses) to a central interneuron, which makes contact with a motor neuron.
The seed consists of three components: embryo, endosperm (sometimes perisperm), and seed-coat. Both endosperm and embryo are the products of double fertilization, whereas the seed-coat develops from the maternal, ovular tissues. The seed habit is a significant advancement in the evolution of higher plants.
Anatomy of seed :-
Seed storage proteins provide a source of amino acids and reduced N necessary for germination and early growth of the seedling.
Chromosome DNA Diploid EggGamete Haploid Meiosis Replication Sexual Reproduction Sperm.. This is an organism or cell with two sets of chromosomes. This is a haploid cell with half the reproductive information from the parent. This is a cell or organism having half of the diploid chromosome number, symbolized by "n".
when soaked in dilute sodium chloride solution onion gain mass because of the process of osmosis.
Explanation: Osmosis is a process when there is movement of water from the region of comparatively higher concentration to the region of lower concentration across in a permeable membrane.