Answer:
The pollen grain which contains 3 haploid nuclei (2 sperm nuclei and 1 tube nucleus) for the male and the carpels which carry the ovary containing the ovule which further undergoes meiosis to produce an ovum/haploid egg cell for the females.
Explanation:
During fertilization,one of the two sperm nuclei inside the pollen tube fertilizes the ovum to form the embryo/seed. The second sperm nucleus fertilizes the diploid pollar nucleus to form the triploid (3n) endosperm. This is known as "double fertilization" which occurs only in angiosperms and not in gymnosperms.
Answer:
I think B but I still could be wrong
sorry is I'm wrong
Answer:
I think the answer is "Steno's principles".
Explanation:
Answer:
Enzyme activity depends on many factors such as Substrate concentration, enzyme cofactor, enzyme inhibitors, pH, and temperature. pH and temperature are two important factors that directly affect the activity of an enzyme as follows:
1. pH
Each enzyme has the specific optimal pH that allows it to perform its function to its fullest. The enzymes are the protein made up of the interaction of the hydrogen bond in the side chain of the protein. if there is any change from optimum pH, the enzyme activity decreases until it stops working.
2. Temperature:
Each enzyme has its own optimal temperature. Any modification or change in temperature results in the activity of an enzyme, and it also leads to the denaturation of an enzyme as it is made up of protein.
<h3><u>Answer and Explanation;</u></h3>
- <em><u>Decomposers are very important in the return of nutrients from dead organisms and waste back to the ecosystem.</u></em>
- <em><u>Molds break down dead leaves and other plants, enabling the release of nutrients back into the ecosystem.</u></em>
- Decomposers break down the organic matter into simpler compounds. it's very important process because complex compounds that build living organisms are not absorbable for other organisms, thus chemical cycling wouldn't be possible and the whole ecosystem would shut down.