Answer:
Fertilization
Explanation:
Egg and sperm are cells known as gametes produced by the GAMETOPHYTE of a sexually-reproducing organism via meiosis. Since egg and sperm cells are produced through meiotic division, their chromosomal number is reduced by half of the parental organism. Hence, sperms and eggs are haploid cells (n) produced by a diploid organism (2n).
Sperm is the male gamete while egg is the female gamete. These two haploid gametes fuse in a process called FERTILIZATION, to produce a diploid ZYGOTE that eventually grows into the diploid structure of the organism called SPOROPHYTE. This system of reproduction called ALTERNATION OF GENERATIONS is used by lower and higher plants.
Answer: Both Amoeba and human beings are heterotrophs and derive nutrition from other organisms.
Explanation:
Answer:
The process of exhalation occurs due to an elastic recoil of the lung tissue which causes a decrease in volume, resulting in increased pressure in comparison to the atmosphere; thus, air rushes out of the airway. There is no contraction of muscles during exhalation; it is considered a passive process.
Explanation:
This type of evolution is known as Microevolution.
Microevolution is the gradual shift in allele frequencies within a population. Four separate processes—mutation, natural and artificial selection, gene flow, and genetic drift—are responsible for this shift. Compared to the changes referred to as macroevolution, this transformation occurs over a very brief period of time (in evolutionary terms).
The area of biology known as population genetics offers a mathematical framework for the study of the microevolutionary process. The goal of ecological genetics is to track microevolution in the natural world. Microevolution is frequently seen in visible forms of evolution, such as antibiotic-resistant bacterial strains.
Speciation, which supplies the building blocks for macroevolution, may result from microevolution.
Therefore, the correct answer is Microevolution. The Microevolution in which Anole lizards on tiny, hurricane-ravaged islands evolved shorter legs.
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