Q401
Open questionWhich of the following initiate the biosynthetic pathway that leads to chlorophyll formation?
Select an option to see the answer and solution.
Biology GK · all questionsPlant Anatomy and Physiology
Plant Anatomy and Physiology
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
999
Questions
21/50
Page
Pick an option on a question to see the right answer and solution.
Q402
Open questionAccording to Shull and Thornton, the naked embryos of both the upper and the lower seeds of Xanthium have
Select an option to see the answer and solution.
Q403
Open questionMatch List-I (Diseases) with List-II (Modes of spreading of secondary infection) and select the correct answer:
| List-I | List-II |
| a. Potato mosaic | 1. By sap inoculation through contact between diseased and healthy plants |
| b. Bunchly top of banana | 2. Secondary infection through the uredospores |
| c. Leaf rust of coffee | 3. Secondary infection through an aphid, Pentolaria nigronervosa |
| d. Black arm of cotton | 4. Caused by rain splashes, wind and dew |
Select an option to see the answer and solution.
Q404
Open questionThe occurrence of which of the following plants indicate intense soil erosion in the area?
Select an option to see the answer and solution.
Q405
Open questionA seed can germinate in the absence of
Select an option to see the answer and solution.
Q406
Open questionThe characters of the pollen grains which have proved of special significance in taxonomic considerations include
Select an option to see the answer and solution.
Q407
Open questionThe postulates of Lundegardh theory of active salt absorption include:
Select an option to see the answer and solution.
Q408
Open questionWhole plant senescence occurs in
Select an option to see the answer and solution.
Q409
Open questionMonocarpic herbs include
Select an option to see the answer and solution.
Q410
Open questionDuring summer or dry season, tropophytic flora behaves as a
Select an option to see the answer and solution.
Q411
Open questionDue to low temperature and high rainfall the organic matter content of the soil increases at higher altitudes, with
Select an option to see the answer and solution.
Q412
Open questionWhich of the following plants show shoot senescence?
Select an option to see the answer and solution.
Q413
Open questionWhich of the following parts of an embryo sac, after fertilization, forms perisperm of seed?
Select an option to see the answer and solution.
Q414
Open questionThe meristem which occurs between mature tissues is known as . . . . . . . . meristerm.
Select an option to see the answer and solution.
Q415
Open questionWhich of the following at any given time does not show productivity of the area?
Select an option to see the answer and solution.
Q416
Open questionWhich of the following coasts of Karnataka and Kerala contain Ceriops candolleana and Bruguiera eriopetala?
Select an option to see the answer and solution.
Q417
Open questionMatch List-I (Scientists) with List-II (Statements regarding the morphological nature of the endosperm) and select the correct answer:
| List-I | List-II |
| a. Hofmeister (1858) | 1. Endosperm is a gametophytic structure, whose development is checked |
| b. Lamnnier (1887) | 2. Endosperm is a second embryo, which is actually modified |
| c. Sargant (1900) | 3. The chief function of endosperm is not that of storage, but the secretion of diastase and other enzymes |
| d. Haberlandt (1914) | 4. Endosperm is the sporophytic tissue or the twin of an embryo |
Select an option to see the answer and solution.
Q418
Open questionCell elongation in internodal regions of the green plants takes place due to
Select an option to see the answer and solution.
Q419
Open questionThe process in which the branches of a superior plant and an inferior plant of the same species are chiseled and tied together is known as
Select an option to see the answer and solution.
Q420
Open questionAbscission does not occur when
Select an option to see the answer and solution.