Answer:
The first law of thermodynamics states that energy is always conserved. The second law states that within a closed system (where only energy can enter or leave the system, while matter cannot), the amount of randomness or disorder, known as entropy, must increase to some maximum value and remain constant
B. alveolus
C. urethra
D. nephron
Ans. (D). nephron.
Kidneys are bean-shaped organs of excretory system that make urine and help in elimination of wastes from the body. Nephrons can be defined as structural and functional units of kidneys, made up of renal tubes and renal capsules.
Process of filtration, re-absorption, and secretion take place in nephrons to filter blood, make urine and excrete waste products out from the body with urine.
Thus, the correct answer is option (D).
The functional unit of the kidney involved in the filtration, reabsorption, and excretion processes is called the nephron.
The functional unit of the kidney where blood is filtered, water and other dissolved substances are reabsorbed, and waste is sent out to be excreted is the nephron.
Each kidney in the human body contains about one million nephrons. The nephron is a tiny tubular structure composed of a renal corpuscle (which is the site for blood filtration), and a renal tubule (where reabsorption occurs). Waste from this filtration is then collected and departs the kidney through the ureter, to be excreted from the body as urine.
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B. Mutations.
C. Nonrandom mating.
D. No immigration or emigration.
Answer:
The correct answer would be D. No immigration or emigration.
It can be explained with the help of Hardy-Weinberg law.
It states that the genotype and allelic frequency of the population remains the same throughout many generations if below-mentioned conditions are followed:
Nonrandom mating is one of the conditions required to maintain genetic equilibrium.
One of the conditions required to maintain genetic equilibrium is nonrandom mating. Nonrandom mating occurs when individuals preferentially choose mates with particular traits, rather than mating randomly. This can lead to changes in the frequency of traits within a population over time.
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(B) Cnidaria
(C) Platyhelminthes
(D) Arthropoda
(E) Chordata
B)Talking to plants may or may not help plants grow faster because the amount of water given was likely different for each group.
c)Talking to plants does not help plants grow faster because the experiment did not involve enough groups of plants to determine this.
D)Talking to plants does help plants grow faster because those plants showed more growth.
which is the best answer to pick hurry have a short amount of time on this test
Answer:
The correct answer will be option-B.
Explanation:
The student performed the experiment to study the effect of talking to plants on the growth of plants. He wanted to study "talking as an experimental variable".
While experiment he divided the samples into control group as well as the experimental group but he mixed the other variables like watering the plants using various methods-directly or with sprinkles in different amount.
This mixing of variables will cause interference with the conclusion as one will not be able to suggest that the growth pattern in plants is the result of the talking or watering. Also, the amount of water as well as mode of providing water differed in the experimental group.
Thus, Option-B is the correct answer.