Correct Answer: D) Cochlea

Explanation

The ear is an important organ that helps us to hear sounds. The ear is divided into three parts: the outer ear, the middle ear, and the inner ear. The part of the ear that contains receptors that convert the fluid motion into action potential is called the cochlea. The cochlea is located in the inner ear and is shaped like a snail shell. It is filled with fluid and lined with tiny hair cells that are sensitive to vibrations. When sound waves enter the ear, they cause the fluid in the cochlea to move, which in turn causes the hair cells to bend. This bending of the hair cells generates electrical signals which are sent to the brain via the auditory nerve, where they are interpreted as sound. The other options listed in the question are also important parts of the ear, but they do not contain receptors that convert fluid motion into action potential. The auditory nerve is responsible for transmitting the electrical signals generated by the hair cells to the brain. The ossicles are three small bones in the middle ear that amplify sound vibrations. The semicircular canals are responsible for our sense of balance and help us to maintain our equilibrium. The oval window is a membrane between the middle ear and the inner ear that transmits sound vibrations from the ossicles to the cochlea. Therefore, the correct answer to the question is option D: Cochlea.

Correct Answer: D. translocation

Explanation

Translocation is the movement of materials in plants from the leaves to other parts of the plant. Nutrients, mainly sugars, are created in the leaves during photosynthesis. These are then transported throughout the plant through phloem, which are a long series of connected cells.

Correct Answer: B. Sweat gland

Correct Answer: D) RNA is made of ribose sugar and single stranded unlike DNA

Explanation

DNA (Deoxyribonucleic Acid) and RNA (Ribonucleic Acid) are both nucleic acids that play a crucial role in the storage and transfer of genetic information in living organisms. One of the major differences between DNA and RNA is the type of sugar molecule present in their structure. DNA is made up of deoxyribose sugar while RNA is made up of ribose sugar. Another major difference between DNA and RNA is their structure. DNA is a double-stranded helical structure while RNA is a single-stranded structure. The double-stranded structure of DNA allows for its stable storage of genetic information, while the single-stranded structure of RNA allows for flexibility in its function. Now, coming to the question, the options state that DNA and RNA differ in terms of the type of sugar molecule present in their structure and the nature of their structure. Option A suggests that DNA is made up of ribose sugar and is double-stranded unlike RNA, which is incorrect. Option B suggests that DNA is single-stranded unlike RNA, which is also incorrect. Option C suggests that RNA is double-stranded like DNA, which is incorrect. Option D is the correct option, which states that RNA is made up of ribose sugar and is single-stranded unlike DNA. Therefore, the correct answer is option D

Correct Answer: D. photosynthesis

Correct Answer: A. keratinous scale

Correct Answer: B. Phytoplanktons

Correct Answer: C. complete culture solution

Correct Answer: B. They may affect more than one target organ

Correct Answer: D. seed dispersal