Correct Answer: D. they have no backbones

Correct Answer: A) I, II and III

Explanation

This Biology question is asking which group of diseases are associated with water. The options are I. onchocerciasis, II. schistosomiasis, III. Dracunculiasis, IV. Elephantiasis, and V. Taeniasis. Onchocerciasis, also known as river blindness, is transmitted by the bite of black flies that breed in fast-flowing streams and rivers. Schistosomiasis, also known as snail fever, is caused by parasitic worms that live in fresh water. Dracunculiasis, also known as Guinea worm disease, is caused by drinking contaminated water containing the larvae of Guinea worm. Elephantiasis, also known as lymphatic filariasis, is caused by parasitic worms that are transmitted by mosquitoes that breed in stagnant water. Taeniasis, also known as tapeworm infection, is caused by eating undercooked meat. From the options given, the correct answer is Option A: I, II and III. This is because onchocerciasis, schistosomiasis, and Dracunculiasis are all water-borne diseases. Option B (II, IV, and V) is incorrect because Elephantiasis and Taeniasis are not associated with water. Option C (II, III, and IV) is also incorrect because Elephantiasis is not associated with water. Option D (I, II, and V) is incorrect because Dracunculiasis is also associated with water. It is important to note that these diseases can be prevented by avoiding contact with contaminated water sources, practicing good hygiene, and taking appropriate medications. To learn more about these diseases and how to prevent them, please read the relevant sections of the recommended textbooks.

Correct Answer: B. Nitrogen

Correct Answer: B. a community is made up of populations of living organisms while a populations is made up of organisms of the same species

Correct Answer: A. offers a wide variety goods

Correct Answer: B) sticky stigmas

Explanation

Wind pollinated flowers are flowers that rely on the wind to transfer pollen from the male reproductive organ (stamen) to the female reproductive organ (pistil). This is different from insect-pollinated flowers, which rely on insects to transfer pollen. The question is asking what characteristic wind pollinated flowers usually have. The options given are long styles, sticky stigmas, small and short stigmas, rough pollen grains, and short styles and pollen. The correct answer is option B, which states that wind pollinated flowers usually have sticky stigmas. This is because wind is not a reliable pollinator, and the pollen needs to stick to something in order to be carried to the female reproductive organ. The sticky stigma provides a surface for the pollen to stick to. It is worth noting that wind pollinated flowers often have small, inconspicuous flowers with no scent or nectar, as they do not need to attract insects for pollination. Additionally, wind pollination is less efficient than insect pollination, so wind pollinated flowers often produce large amounts of pollen to increase the chances of successful pollination. Overall, wind pollinated flowers usually have sticky stigmas to help the pollen stick during transfer and often have other adaptations to maximize the chances of successful pollination.

Correct Answer: C. type of organisms present indicate that habitat is aquatic

Correct Answer: B) river blindness

Explanation

This Biology question is asking which of the given options is not sex-linked. The options are stunted growth, river blindness, haemophilia, and colour blindness. Sex-linked traits are traits that are carried on the sex chromosomes, X and Y. In humans, females have two X chromosomes while males have one X and one Y chromosome. This means that sex-linked traits are more commonly expressed in males as they only have one X chromosome. Out of the given options, the correct answer is river blindness. River blindness is caused by a parasitic worm that is transmitted by the black fly. It is not related to the sex chromosomes and is therefore not a sex-linked trait. Stunted growth, haemophilia, and colour blindness, on the other hand, are all sex-linked traits. Stunted growth can be caused by mutations on the X chromosome, haemophilia is a bleeding disorder caused by a deficiency in clotting factors that are carried on the X chromosome, and colour blindness is caused by mutations in genes on the X chromosome. It is important to understand sex-linked traits as they can affect the inheritance patterns of certain traits and diseases. For more information on sex-linked traits and inheritance patterns, please see the relevant sections of the recommended textbooks.

Correct Answer: D. Vulva

Correct Answer: D. absorption of water from the soil by the root

Explanation

Osmosis is responsible for the ability of plant roots to draw water from the soil. Plants concentrate solutes in their root cells by active transport, and water enters the roots by osmosis.