<span>Additional facts:
A test cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring.
Answer:
You'd use it when you wish to see if the one that you think is a homozygous dominant is a purebred, because if you did get a recessive offspring then it proves that the animal is a heterozygous and not a purebred.</span>
Answer:
D. The tubes allow water and nutrients to be transported throughout
the plant.
Explanation:
option D supports the description of the cells. The long , vertical tubes transport water and nutrients and are most likely xylem and phloem vessels.
option A is wrong since, chloroplasts inside the cell helps in absorbing sunlight.
option C is also wrong, because water loss is controlled by the stomata in the leaves and they are not long tubes.
option B could possibly be right but option D is better suited.
Answer:
The nights are shorter.
Explanation:
Summer normally begins on June 21 and ends on September 20 in the northern hemisphere. This season is characterized by the higher temperatures of the year than sloping, and in which both animals and plants are more active. Summer is characterized by the days being longer than the nights.
Anything that says further apart is incorrect. So B is incorrect.
A is correct as near as I can tell.
C is not correct. The particles. I think C is the right answer supplied with the wrong reason. Regretfully, you can't choose it.
Same answer as C for D. Right answer wrong reason.
Answer A.
Answer:
b) The nuclear envelope is continuous with the Golgi apparatus.
Explanation:
The nuclear envelope is a nuclear membrane composed of two lipid bilayers: inner and outer membrane and perinuclear space between them. Its outer membrane is continuous with the endoplasmic reticulum. Nuclear pores that are part of this envelope allow the movement of molecules in and from the nucleus (e.g. mRNA formed during transcription should be transported into cytosol through the pores).
