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Doctors Medicines MCQs Q&A

Consider the following statements and choose the correct answer:
1. In Oenothera type of monosporic embryo sac, the embryo develops from the micropylar megaspore of the tetrad
2. Antipodal cells are altogether absent in Oenothera type
3. The genus Trapa forms an 8-nucleate embryo sac of the Polygonurn type
4. Oenothera type of embryo sac development has been found to be a characteristic feature of the entire family Onagraceae

Consider the following statements and choose the correct answer:
1. In Oenothera type of monosporic embryo sac, the embryo develops from the micropylar megaspore of the tetrad
2. Antipodal cells are altogether absent in Oenothera type
3. The genus Trapa forms an 8-nucleate embryo sac of the Polygonurn type
4. Oenothera type of embryo sac development has been found to be a characteristic feature of the entire family Onagraceae Correct Answer Only 1, 2 and 3 are true

Related Questions

Consider the following statements regarding recurrent type apomixis and choose the correct answer:
1. There is meiosis during the formation of megaspore
2. The embryo sac is diploid in nature
3. The embryo sac never develops from a cell of the archesporium
4. The development of embryo from a cell of an embryo sac other than egg is known as apospory
Which of the following statements is/are correct? 1. Monosporic development is the method of embryo sac formation from a single megaspore. 2. The egg apparatus consists of two synergids and one egg cell.
Which of the following statement(s) is/are CORRECT for antigen activated effector T cells?
P. CD4+ cells make contact with macrophages and stimulate their microbicidal activity.
Q. CD4+ cells make contact with B cells and stimulate them to differentiate into plasma cells.
R. CD8+ cells make contact with B cells and stimulate them to differentiate into plasma cells.
S. CD8+ cells make contact with virus infected cells and kill them.
Select the four statements about Plasmodium that are true. A)Inside an infected mosquito, haploid gametes fuse, forming a diploid zygote that develops into an oocyst B) Plasmodium cells infect two specific types of cells in humans. C) Inside an infected mosquito, haploid gametes fuse, forming a haploid zygote that develops into an oocyst. D) When a mosquito bites a human with malaria, diploid Plasmodium cells enter the mosquito. E) Plasmodium cells are transferred to humans through mosquito saliva. F) The life cycle of Plasmodium involves only haploid forms. G) The complete life cycle of Plasmodium requires two hosts.
In the question two statements are given, followed by two conclusions, I and II. Read all the conclusions and then decide which of the given conclusions logically follow/s from the given statements. Statements: All white blood cells are red blood cells. Some blood cells are red blood cells. Conclusions: I. All blood cells are red blood cells, is a possibility. II. Some red blood cells are not blood cells.
The megaspore mother cell nucleus after dividing meiotically forms four haploid megaspores which are arranged in a linear tetrad, of which the lower most megaspore is functional in case of
A monosporic, tetranuclear embryo-sac having an egg apparatus composed of two synergids and one egg, and a single polar nucleus is characteristic of all the members of
The question below consists of a set of labelled sentences in which first and the last sentence is given. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. S1- Better standard of living for the family is one of the advantages of women/female education. P- An educated mother will earn as good as the father of the family and will look after the financial needs of her family in a much better way.  Q- It doesn’t take a mathematician to conclude that a family relying on double wages is more content and happy than a family which relies on the income of a single parent. R- Women are more concerned about the health of their family than men and have a great sense of hygiene too.  S- Two incomes under the same roof will improve the quality of living and also ensure better education and facilities to the children, not to mention that a happy family will ultimately lead to a happy society. S6- Even working women are constantly concerned about their family’s health and don’t compromise with it at any cost.
Consider the following statements regarding poloyembryony and choose the correct answer:
1. False polyembryony includes the development of two or more embryo sacs within the Same nucellus, and the embryos are derived from different embryo sacs
2. In cleavage polyembryony, the zygote instead of giving rise to one embryo produces embryos by cleavage
3. According to Jeffrey (1895), in Erythronium americanum the "embryogenic mass" forms two or three embryos
With reference to the drainage patterns, consider the following statements: 1. Trellis pattern develops where hard and soft rocks exist parallel to each other. 2. When rocks are strongly joined, then a rectangular pattern develops. 3. When the river channel follows the slope of the terrain, it develops a dendritic pattern. Which of the statements given above is/are correct?