91. Pollination is brought about by the movement of water which brings the anthers of male flowers against the stigmas in case of
92. All diseases caused by viruses are of
93. The cohesion-tension theory of the translocation of water in plants was first introduced by
94. Consider the following statements regarding Xenia and choose the correct answer:
1. If a white variety (yy) is pollinated with pollen from a yellow variety (YY), one of the male gametes (Y) will unite with the egg (y) to produce a hybrid embryo (Yy) which will act as a heterozygote for yellow endosperm in the next generation
2. The second male gamete (Y) will unite with the two polar nuclei (y, y) and produces the primary endosperm nucleus (Yyy) which is triploid
3. If a yellow endosperm variety (YY) is crossed with pollen from a white grained variety, the grains produced are white like the pollen parent
1. If a white variety (yy) is pollinated with pollen from a yellow variety (YY), one of the male gametes (Y) will unite with the egg (y) to produce a hybrid embryo (Yy) which will act as a heterozygote for yellow endosperm in the next generation
2. The second male gamete (Y) will unite with the two polar nuclei (y, y) and produces the primary endosperm nucleus (Yyy) which is triploid
3. If a yellow endosperm variety (YY) is crossed with pollen from a white grained variety, the grains produced are white like the pollen parent
95. Which of the following plant pigments absorbs in red and far-red region of light?
96. Solar energy is converted into ATP in
97. Who among the following defined apomixis as the substitution for sexual reproduction of an asexual process which do not involve any nuclear fusion?
98. The ultimate cause of water movement in a plant stem against gravity is
99. Which of the following cell organelle is reponsible for cellular respiration?
100. The basic distinction between peroxidase and oxidase activity is that
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- Plant Anatomy and Physiology - Section 9
- Plant Anatomy and Physiology - Section 10