Answer:
Option (a), (c) and (d).
Explanation:
The prokaryotes lacks the nucleus and the membrane bound organelles. Eukaryotes have well defined nucleus and the endomembrane system is present in eukaryotes.
The main site of the oxidative phosphorylation is the mitochondria in case of eukaryotes. The mitochondria are known as semi autonomous organelle as it contains its genetic material. As the oxidative phosphorylation occurs in mitochondria, this is the main site of ATP production. The mitochondria is a membrane bound organelle and absent in case of prokaryotes.
Thus, the correct answer is option (a), (c) and (d).
The mammalian sperm cell consists of a head, a midpiece and a tail. The head contains the nucleus with densely coiled chromatin fibres, surrounded anteriorly by an acrosome, which contains enzymes used for penetrating the female egg.
Answer:
- Dry climates do not have sufficient <u>moisture</u> during most of the year.
- Deserts are located in the <u>arid</u> climate.
- The <u>temperate</u> climate is in a grassland, or steppe, region.
Explanation:
Desert climate develop when the rate of evaporation is extremely higher than the rate of precipitation. This means that the moisture content would be very low in most of the times of the year. Hence, in the long run, the climate will become semi-arid to arid.
On the other hand, temperate climates reflects the conditons of moderate rainfall that spreads across the year or most time of the year. Usually, temperate climate has sporadic drought, mild to warm summers and cool to cold winters. These conditions are enough supporting to produce grasslands, or steppe.
Fertile land is lost, and there is increased pollution and sedimentation in rivers and other aquatic areas.