Answer:
I think it's B not sure though check in Google or read the book
Answer:
The reason that there is no fruit even the plant produced healthy flowers maybe because
1. absences of pollinators due to declining poliinator population
2.weather conditions are preventing pollination
3. prevalence of flooding
Explanation:
1.Fruits are direct result of pollination. Due to the decrease in the number of pollinators especially orchid bees, some fruit bearing plants produce flowers but no fruit.
Bees decline their population because of parasites, diseases, exposure to chemicals and other environmental factors.
2.Unfavorable factors may prevent the agents of pollination to do their jobs. Bees and other insects may be hindered by wet or cold weather or some use of chemicals.
3.Brazil nut grow in lowland rainforest where there is no flooding.
<span>This barrier is known as reproductive isolation and and generally occurs when two species have incompatible genitalia which are unable to function together. It can also occur when the sperm of the male species is unable to be fertilized by the female, regardless of genital compatibility.</span>
C. were conditioned to salivate in response to the sound of a bell.
Answer:
Option (a), (b), (c) and (d).
Explanation:
Cytokinesis may be defined as the process by which the cytoplasm of the cell is divided into the two daughter cell. This process is quite similar to the process of binary fission of prokaryotes.
The cytokinesis follows after the telophase stage. The cytoplasm with the organelles are divided into the daughter cells from the parent cell. This process is proceeded with the formation of the cleavge furrow in the animals ans divides into daughter cells.
Thus, the correct answer is option (a), (b), (c) and (d).
