The main reason that most farmers use stem cuttings rather than just planting a seed is that a tree's genetic variation will occur. The seeds of many fruit trees tend to vary differently from the parent, because seeds themselves are produced by sexual reproduction (i.e they receive genes from a male and female to form). As they are a cross from two sets of genes, many fruit trees are not “true to seed”. Their seeds will produce a generally different variety of tree from the parent. When using stem cuttings, it's almost like a cloning process.
Cold air is high density compared to hot air which is less dense
Mercury's seasons are difficult to determine. This is because it has virtually no tilt (0.03 degrees), but a highly elliptic orbit. ... Mercury also has a bizarre rotation, spinning three times (every 53 Earth days) over two rotations around the Sun, making it impossible to tell when one season begins and one ends.
Can we have the picture please? sorry I have to type so many word s
Answer:
All of the above are correct.
Explanation:
The plasma membrane is the selectively permeable membrane that allows the movement of some selected particles only. Different types of movement like diffusion, osmosis and active transport occurs in the body.
Glucose acts as the primary energy source of the body. Glucose can be reabosrbed in the body by the facilitated diffusion and by the secondary active transport as well depending on the site of the cell. Glucose can enter in the peritubular capillaries as well.
Thus, the correct answer is option (d).
