Answer:
Plants take up essential elements from the soil through their roots and from the air (mainly consisting of nitrogen and oxygen) through their leaves. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps.
During fertilization, the pituitary gland secretes the follicle-stimulating hormone, which acts on the follicles and stimulates them to produce progesterone. The correct option is B.
<h3>What is fertilization?</h3>
Fertilization is defined as the union of two haploid gametes, the spermatozoa and the oocyte, also known as the egg, to restore the diploid state, form a zygote through the process of egg activation, and initiate a series of mitotic divisions that result in cell differentiation and embryo development.
During fertilization, the pituitary gland secretes the follicle-stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.
If fertilization occurs, the fertilized egg attaches to the uterine lining and a placenta develops.
The fertilized egg then sends a signal to the ovary to continue secreting progesterone, which keeps the pregnancy going by keeping the uterus lining thick and nourishing for the developing embryo.
Thus, the correct option is B.
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Answer:
Meiosis
Explanation:
All living organisms reproduce i.e. replicate themselves by producing young ones. However, they either do this sexually or asexually. Asexual reproduction involves the contribution of only one of the parent while sexual reproduction involves the two parent's contribution.
In sexual reproduction, a process of gamete formation called MEIOSIS occurs whereby the parental cell produces reproductive daughter cells that have a reduced number of chromosome (by half). The male and female gamete unites in sexual-reproducing organisms to form the offsprings.
Since only one parent is needed in asexual reproduction, there is no need for formation of gametes, hence, meiosis (a division only for reproductive cells) does not occur. The parent simply divides into its progeny.
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Answer:
Need experiment but most good with energy are fat, protein and last carbohydrate due to variation in Hydrogen content and C-H bonds proportion