81. Producing an orienting response in relation to some environmental response so that the organism gets itself into favourable conditions is known as
82. Assertion (A) Leguminous plants are nitrogen fixers.
Reason (R) Leguminous plants have Rhizobium in their root nodules.
Reason (R) Leguminous plants have Rhizobium in their root nodules.
83. Match List-I (Embryo types) with List-II (Contributions of proembryonal cells) and select the correct answer:
List-I
List-II
a. Onagrad type
1. The basal and terminal cells, both contribute to the development of the embryo
b. Solanad type
2. The basal cell undergoes no further division and the suspensor, if present, is always derived from the terminal cell
c. Asterad type
3. The basal cell plays only a minor role or none in the subsequent development of the embryo
d. Caryophyllad type
4. The basal cell usually forms a suspensor of two or more cells
| List-I | List-II |
| a. Onagrad type | 1. The basal and terminal cells, both contribute to the development of the embryo |
| b. Solanad type | 2. The basal cell undergoes no further division and the suspensor, if present, is always derived from the terminal cell |
| c. Asterad type | 3. The basal cell plays only a minor role or none in the subsequent development of the embryo |
| d. Caryophyllad type | 4. The basal cell usually forms a suspensor of two or more cells |
84. The in vivo synthesis of the purine ring of cytokinin takes place on
85. The examples of hypogeal germination are the seeds of
86. A mixture of the cytokinin 6-benzyladenine and GA4 and GA7 forms
87. The term taiga is applied to the
88. According to Addicott and Lynch, the most important factor controlling abscission is the condition of the
89. Which of the following is capable of reversing the light-break effect of red light?
90. Match List-I (Species) with List-II (Specialised epiphytic characters) and select the correct answer:
List-I
List-II
a. Ficus ramentaceae
1. Rootless
b. Asplenium nidus
2. Almost entirely green roots
c. Tillandsia usneoides
3. Coracious and thick leaves
d. Polyrrhiza funalis
4. Pocket leaves
| List-I | List-II |
| a. Ficus ramentaceae | 1. Rootless |
| b. Asplenium nidus | 2. Almost entirely green roots |
| c. Tillandsia usneoides | 3. Coracious and thick leaves |
| d. Polyrrhiza funalis | 4. Pocket leaves |
Read More Section(Plant Anatomy and Physiology)
Each Section contains maximum 100 MCQs question on Plant Anatomy and Physiology. To get more questions visit other sections.
- Plant Anatomy and Physiology - Section 2
- Plant Anatomy and Physiology - Section 3
- Plant Anatomy and Physiology - Section 4
- Plant Anatomy and Physiology - Section 5
- Plant Anatomy and Physiology - Section 6
- Plant Anatomy and Physiology - Section 7
- Plant Anatomy and Physiology - Section 8
- Plant Anatomy and Physiology - Section 9
- Plant Anatomy and Physiology - Section 10