ANSWER: 8.9
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Basically the seed contains 2 parts, the testa, which is the seed coat that protects the seed and cotelydon, which is the inside of the seed, containing the radical and plumle.
for seed to germinate, we need 3 basic conditions,
warmth, it is the suitable temperature for seed germination, it can influence the activity of enzymes. providing a optimum temperature
water, to soften down the testa so that the shoot can break out from the testa
and oxygen, for aerobic respiration
.
If these conditions are absent, the seed may be in the state of dormancy. where is won't germinate until it meets the suitable conduction.
after that, the enzyme will digest the nutrient inside the seed and provide amino acid, which is necessary to seed germination. and meanwhile the aerobic respiration provides energy, so that the plumlecan shoot out, and be the shoot of the plant.
and then until it grows leaves, it'll start to complete photosynthesis, instead of using the nutrients inside the cotelydon.
phospholipids, glycolipids, and sterols
Answer:
Cell walls prevent cells from dying in hypertonic conditions.
Explanation:
The cell wall is a rigid structure, essential for the survival of fungi, and knowledge of its composition may be useful for the development of new antifungal drugs. This wall does not alter the characteristics of the fungus, it stimulates and presses the fungus to flourish.
The fungal cell walls are similar in function to the cell walls of many protists, bacteria and plants. They prevent cells from bursting in hypotonic environments, but are unable to prevent cells from dying in hypertonic conditions. These cell walls also provide the cell with a degree of physical environmental protection and differ in the molecular composition of plant cell walls, as the fungal cell walls are chitin, while the plant cell walls are formed by cellulose.
