Answer:
(2) low power: 100 small pollen grains
high power: 25 large pollen grains
Explanation:
Compound light microscopes are devices used to greatly magnify objects. They have several objective lenses, a low-power lens magnifies 10 times (10X) the objects, and the high-power lens magnifies them 40 times (40X).
For that reason, when observing the pollen grains with the high-power lens the student will see them bigger than with the low-power lens. However, the field of view (the visible area through a lens) is reduced when a higher power lens is used, so fewer pollen grains will be seen.
The answer therefore is the option of higher number of pollen grains of small size for the low-power lens, and lower number of pollen grains of larger size for the high-power lens.
Answer:
1. Tt, Tt
2. RR, Rr
3. 50% homozygous
4. Pp Pp
5. 50% purple flowers
6. Pp, Pp, purple heterozygous
7. pp pp
8.SS, Ss or SS, SS
9. Parents were SS, Ss
Explanation:
The answer is mitochondrion
Answer:
The correct answer will be - the sugar is not transported to roots
Explanation:
The girdling is performed on tress by making a groove of 1 cm in the bark of a tree.
The girdling activity removes the phloem tissue of the trees which help in the conduction of the sugar and other useful nutrients in the trees.
Since the phloem is present on the outside portion of the vascular cambium due to the secondary growth, therefore, removing the bark and making a groove in the tree removes the portion of the phloem. The removal of the phloem stops the blockage of the sugar to the roots as a result of which the root dies and water is not absorbed. This leads to the death of the tree after some time.
Thus, the sugar is not transported to roots is the correct answer.
