Answer A:
1. Spiral chloroplast:
This organelle help in photosynthesis, because it contain green pigment called chlorophyll in which water and carbon dioxide combine in the presences of sun light to prepare glucose.
2. Cell wall:
It is chemically composed of<span> an outer layer of pectin and an inner layer of cellulose. It provide rigidity and shape to spirogyra cell.</span>
Answer B:
The other parts which are not labelled include mucilage, cytoplasm, pyrenoids, cytoplasmic strand.
Answer C:
Function of pyrenoid:
<span>Each chloroplast strand has several round bodies called 'pyrenoids', which are responsible for starch production.
</span>Function of mucilage:
Mucilage help in retaining water in cell.
an area or category or genre which is not liked or seen as useful to many.
The first comprehensive lifespan view was developed by Erik Erikson. It is called the Erikson's stages of psychosocial development which identifies eight stages where a developing individual should be able to go through from infancy to adulthood. These stages are infancy (0 to 23 months), early childhood (2 to 4 years), preschool years (4 to 5 years), school age (5 to 12 years), adolescence (13 to 19 years), early adulthood (20 to 39 years), adulthood (40 to 64 years) and maturity (65 to death). In each stage, specific values, psychosocial crisis, significant relationship and existential question are being specified by Erikson.
Answer: The branch of biology and medicine concerned with the study of embryos and their development.
Explanation:
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