Answer:
Xylem transports water and mineral salts from the roots up to other parts of the plant, while phloem transports sucrose and amino acids between the leaves and other parts of the plant.
Answer:
the forward edge of an advancing mass of air.
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Explanation:
Answer:
The main difference between microbiome and microbiota is that microbiome describes the entire habitat of the microorganisms, including bacteria, archaea, lower and higher eukaryotes, and viruses, their genomes (i.e., genes), and the surrounding environmental conditions whereas microbiota is the assemblage of microorganisms
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Explanation:
Answer:
D. All of the above
Explanation:
Can't see option C, but since the other two options are functions of the immune system, I assume it'd be true. The immune system is meant to protect the body from infections.
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Answer: Only options A, B, C and D are true statements
A) One sperm fuses with an egg while the other sperm fuses with the polar nuclei.
B) It results in the formation of a diploid embryo and triploid endosperm.
C) Both sperms involved in double fertilization form within the same pollen tube.
- The diploid nucleus resulting from the second fertilization undergoes meiosis to form the endosperm.
Explanation:
Double fertilization is a process that occurs in only flowering plants. It involves the following:
- A pollen grain produces TWO male gametes
- one male gamete fertilize the egg to form a zygote that is DIPLOID (with two basic sets of chromosomes)
- the second male gamete fuses with another cell named POLAR NUCLEI, to form endosperm (the food storing tissue) in the seed. The endosperm formed is TRIPLOID ( it has three sets of chromosomes), having undergone reductive division - meiosis
Thus, the options A, B, C and D are true statements
