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NeX [460]
3 years ago
15

Why is it important to elevate the stigma

Biology
1 answer:
kondaur [170]3 years ago
4 0
The stigma of the flower must be elevated (by the style) away from the ovary to avoid self pollination or contamination. The stigma is covered with sticky substances so that pollen can easily attached themselves to it.
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What prediction can you make about the impact of these threats on the resident populations versus the transient populations?
Mariulka [41]

Answer: A) The resident populations are more likely affected by these threats because of their proximity to shore.

Explanation:

All of these threats are higher in coastal regions.

As contaminants usually reach the ocean through rivers or because of coastal cities, the highest degree of pollution is there. All chemicals will accumulate in this region first, before they disperse into the offshore region. This is also caused by the fact that the coastal waters have a lower volume and surface area than the offshore which results in a higher degree of contamination.

6 0
3 years ago
LDL (low-density lipoprotein) contains
Basile [38]

Answer:The correct answer is " a"

LDL contain protein,triglycerides,phospholipid and cholesterol.

Explanation:

Low density lipoprotein,or LDL,are complex aggregates of lipids and protein.Their function is to transport lipids (fats) around the body,in the bloodstream,and to the cells where its required.Apart from this,it also carries triglycerides,phospholipids and fat soluble vitamins.

Lipoprotein is composed of a hydrophobic core that is made up of polyunsaturated fatty acids and cholesterol molecules,along with a lipid membrane that contains protein called apolipoproteins.

There are 4 major classes of lipoprotein:

•chylomicrons

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•high density lipoprotein (HDL)

•low density lipoprotein(LDL)

7 0
3 years ago
Place the following in the correct order as they occur in CELL RESPIRATION.
Goryan [66]
  1. Electrons and h+ ions pop off and are picked up by NADH.
  2. 1 C is stripped from 3-C PGA and makes Co2.
  3. Coenzyme A attaches to 2-C molecule making Acetyl Co-A.
  4. Resulting 3 C molecule is stabilized BEFORE entering the mitochondria.
  5. Acetyl Co-A enters mitochondria and drops off 2-C molecules.
  6. In cytosol, 6-C glucose and 2 ATP split into two 3-C molecules (glycolysis).
  7. 2-C molecule combines with 4-C molecule and breaks into two 3-C molecules
  8. Krebs cycle spins twice; each time stripping 1 carbon to make Co2 as a by-product.
  9. With each cycle of Krebs, electrons and H+ ions pop off, are picked up by NADH and FADH2 and taken to ETC
  10. 4 molecules of ATP are generated.
5 0
3 years ago
Which behavior is an instinct?
suter [353]

Answer:

D

Explanation:

A robin building a nest is not learned or taught like the others. It is just instinctive for robins to build nests.

8 0
3 years ago
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Which consist of sperm cells and egg cells? <br> gametes<br> tetrads<br> diploids<br> chromosomes
motikmotik
The answer is Gametes
7 0
3 years ago
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