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Select the correct statement/s from the following: A. Night blindness is caused by Vitamin A deficiency. B. Colour blindness is caused by genetic defects.

Select the correct statement/s from the following: A. Night blindness is caused by Vitamin A deficiency. B. Colour blindness is caused by genetic defects. Correct Answer Both A and B

Most cases of colour blindness are hereditary. However, colour blindness can also be acquired due to diseases that damage the optic nerve or the retina. There is no cure for colour blindness currently. Night blindness can be caused by near sightedness, cataracts, or vitamin A deficiency and is a treatable condition.

Related Questions

Six friends B1, B2, B3, B4, B5 and B6 are playing a game. Each of them likes one colour among red, yellow, black, white, green and blue. Each of them like one tie among T1, T2, T3, T4, T5 and T6. None of them likes the same colour and None of them likes same tie. One who likes T3 also likes yellow colour. One who likes T5 also likes red colour. B1 don’t like red colour. B6 likes T2 tie and black colour. B2 likes either white colour or green colour. B4 likes T1 tie. One who likes green colour also likes T4 tie. Either B1 or B5 likes T4 tie. B5 like either yellow colour or red colour. If B3 likes T3 tie, then which of the following combination of Tie – Colour – Friend is not correct?
Consider the following pairs Vitamin Deficiency             Disease A) Vitamin C                       Scurvy B) Vitamin D                       Rickets C) Vitamin E                       Night Blindness Choose the correctly matched pair
Consider the following pairs: Vitamin Deficiency disease 1. Vitamin C Scurvy 2. Vitamin D Rickets 3. Vitamin E Night blindness Which of the pairs given above is/are correctly matched?
Vitamins protect our bodies from diseases and illness. Select the incorrect statement(s) with respect to vitamins from the codes given below: A. Deficiency of vitamin A makes our bones weak.  B. Deficiency of iron causes paleness.  C. Deficiency of vitamin D causes swollen and bleeding gums.  D. The deficiency of vitamin B helps to increase our appetite. 
Consider the following statements: I. Anaemia is a disease which is caused by the deficiency of iron. II. Beri Beri is caused due to deficiency of Vitamin B1. III. Bleeding diseases is caused due to deficiency of Vitamin E. IV. The disease which leads to the abnormal enlargement of thyroid gland is goitre. Which of these is/are correct?
Given below are four jumbled sentences. Select the option that gives their correct order. A. Problems in the absorption of vitamins are the main cause of vitamin deficiency. B. This is the reason why people with metabolic disorders such as obesity, often suffer from vitamin deficiency C. Hence, digestion and the absorption mechanism in the body are very important. D. Vitamin deficiency is not just caused by a lack of vitamins in the diet.
A, B, C, D, E and F are six girls who use 6 different face wash – Pond’s, Lakme, Lotus, Garnier, Himalaya and Kaya (but not necessarily in the same order). They also like six different colours – Red, Blue, Brown, Peach, Black and White (also not necessarily in the same order. A and C do not like a Red colour. The girl who uses Lakme face wash likes Peach colour. The girl who likes White colour does not use Kaya nor Lotus face wash. B neither likes Peach nor Red colour. D does not like a Blue colour but uses a Lotus face wash. The girl who uses Pond’s face wash likes Red colour. C does not use Lakme face wash nor likes white colour. F neither uses Himalaya nor Kaya face wash but likes Brown colour. Who does use Himalaya’s face wash?
Read the passage carefully and choose the best answer to each question out of the four alternatives. Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa. Two centuries ago, the black rhinoceros – which roamed much of sub Saharan Africa – had 64 different genetic lineages; but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.
Sub Sharan Africa has lost how many black rhino genetic lineages in 200 years?
Read the passage carefully and choose the best answer to each question out of the four alternatives. Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa. Two centuries ago, the black rhinoceros – which roamed much of sub Saharan Africa – had 64 different genetic lineages; but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.
Genetic diversity is proportional to _____________________.
There are six girls Mayuri, Kavyanjali, Divya, Poonam, Neha and Vidya. Each girl likes a different colour - red, blue, purple, yellow, green and pink. Divya likes red colour. Poonam does not like green and yellow colour. Neha likes purple colour. Vidya does not like pink and green colour. Mayuri likes blue colour. Which of the following girl and colour combinations is correct?