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.
The O+ blood group is a universal donor and can donate to any other blood group that is rhesus positive.
<h3>What is universal donor?</h3>
A universal donor is a blood group which is able to donate blood to every other blood group. This is possible because of the lack of an antigen which will react with an antibody to form agglutination.
The O+ blood group is a universal donor and can donate to any other blood group that is rhesus positive.
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Answer:
improves people's moods and reduces the likelihood of stress-related depression. Flowers and ornamental plants increase levels of positive energy and help people feel secure and relaxed.
Explanation:
correct me if I'm wrong.
<span>The crust (sedimentary/igneous/metamorphic rocks), the mantle (oxygen, silicon, magnesium, iron) , inner core (solid iron and nickel) and outer core (liquid iron and nickel). </span>
S and M phase
anaphase
-disjunction of two sister chromatids