Answer:
A) The two cotyledons have absorbed the endosperm and supply the nutrients to the embryo. As the embryo emerges from the soil it consumes the nutrients and develops the shoot. The hypocotyl becomes part of the stem and the radicle develops into the roots.
Explanation:
Eudicot seeds are angiosperm that possess two cotyledons in their seed, their leaves originate from the principal central vein and radiate with networks of viens through the exteriors of the leaves. Eudicot seeds do undergo secondary growth.
The three primary parts of a seed are the embryo, endosperm, and seed coat. (from the innermost part to the outermost part respectively).
Now, in the process of germination of eudicot seeds, the two cotyledons absorbs the endosperm because the endosperm is a source of stored food (food substances stored as starch). Nutrients derived from these food substances are therefore supplied into the embryo.
As the embryo matures, it emerges from the soil. The embryo consists of two main regions
The embryonic root develops into the radicle . Hence, the radicle develops into the roots.
The embryonic shoot consist of two main parts (the epicotyl and the hypocotyl). The Hypocotyl therefore become the part of the stem.
The population age structure is is simply the structure of a population in a given time period by age groups. In order to represent the population age structure in a simple and efficient way, the population pyramid is used. Depending of what type of population is dominant, the pyramid will have different shapes. It can easily show us the trends and type of demographic transition for a particular population. When there high birthrates, the pyramid tends to be widest at the bottom, but when there's low birthrates the pyramid tends to be widening in the middle and upper sections.
Answer:
The noise of cracking or popping in our joints is actually nitrogen bubbles bursting in our synovial fluid
Explanation:
It is because synovial fluid lubricates your joints like motor oil in a car's engine, reducing friction and preserving our cartilage.
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Answer:
For the first one the answer is 1) Sodium/potassium pump. For the second one is 2) Active transport. For the last one is 3) b. passive transport osmosis.
Explanation:
1) Sodium/Potassium pump requires ATP for it to start carrying three sodiums to the extracellular fluid and two potassiums to the intracellular fluid.
2) During active transport molecules like glucose, use a protein channel to enter or leave the cell. Although in most cells, glucose goes through the membrane with pumps, it's not general, and in some cells other mechanisms are used. But glucose is always too big to enter the cell with other than active transport.
3) The diffusion of water through a semipermeable membrane is an example of passive transport and osmosis. Water molecules are small enough to go through the cell membrane without any carrier, it also, goes with the gradient, and therefore osmosis happens.
The answer is A. Fungi<span>, </span>protozoa<span>, and algae, are composed of </span>eukaryotic<span> cells.</span>