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horsena [70]
3 years ago
6

please help i do not understand and I'm struggling with these biology questions please help me will give 10 points) How are a se

ed coat a pollen grain and a spore wall adaptive structures?​
Biology
1 answer:
STALIN [3.7K]3 years ago
7 0

seed coat protects the cotyledons and embryo from outer environment and from attack of pathogens

pollen grain has a sculptors covering with weak points(germ pores) in it through which pollen tube comes out.

A spore is generally protected by 2-3 tough resistant walls around to tied over the unfavourable conditions.

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When a blood film is viewed through the microscope, the RBCs appear redder than normal, the neutrophils are barely visible, and
rusak2 [61]

The buffer was too acidic i.e when a blood film is viewed through the microscope, the RBCs appear redder than normal, the neutrophils are barely visible, and the eosinophils are bright orange.

<h3>What are buffer used for?</h3>

Buffers are employed to keep the pH of a solution steady because they can neutralize little amounts of extra acid or base. There is a specific pH range for a certain buffer solution and a predetermined amount of acid or base that can be neutralized before the pH changes. The buffer capacity is the maximum amount of acid or base that can be supplied to a buffer without causing a pH change.

As a pH value greater than 7.8 or lower than 6.8 might result in mortality, human blood contains a buffer of carbonic acid (H2CO3) and bicarbonate anion (HCO3-) to keep blood pH between 7.35 and 7.45.

Learn more about buffer here:

brainly.com/question/1385846

#SPJ4

5 0
2 years ago
PLEASE HELP IM GIVING 30 POINTS AND BRAINLIEST!!!!!! PLEASE ​
Nostrana [21]

Answer:

a. uterus

b.ambiotic fluid

c.fetus

d.placenta

e.ambilical cord

f. cervix

i really hope this helps

4 0
3 years ago
After the left atrium, list the next 3 locations of blood flow.<br> 1.<br><br> 2.<br><br> 3.
Ann [662]
Veins brain heart is the answer men’s sks sja s
7 0
3 years ago
Read 2 more answers
The inhabitants of the planet Mendel have three alleles for hair color: red (R), white (W) and blue (b). The R and W alleles exh
Alex_Xolod [135]

Answer:

4 RW pink hair color

Explanation:

Let the allele for red hair color = R

Let the allele for white hair color = W

Let the allele for blue hair color = b

Since R and W exhibit co dominance it means none of both traits have the tendency or capability to masked the other .

As such individual with RW genotype = PInk hair color

Allele b is recessive and only individuals with the genotype bb exhibit the blue allele  

Now; if a cross occurs between a red-haired Mendelian and a white-haired Mendelian

i.e

RR   × WW

we have

           R           R

W         RW       RW

W        RW         RW

So we have the following offspring :

4 RW = 4 pink

So theoretically , the possible phenotypes results to 4 RW pink hair color

5 0
3 years ago
Read 2 more answers
Which of the following molecules does NOT contain a B-1,4 glycosidic linkage?
Lesechka [4]

Answer:

Chitin, Cellulose and Peptidoglycan (B, C and D)

Explanation:

Both chitin and cellulose are composed mainly of glucides, bound by glycosidic bonds of the Beta 1-4 type. This is largely why they cannot be digested by most non-herbivorous animals.

As for peptidoglycans, it is a net. It is a molecular framework present in bacteria that has β1-4 and α1-4 bonds in different proportions.

5 0
3 years ago
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