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Q. No.Roots are modified in some plants for storing reserve food materials. These modified roots usually are swollen and assume different forms. Which of the following such roots does not have any definite shape?
1. radish
2. beet
3. carrot
4. sweet potato
Subtopic: Modification of Roots |
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Roots are modified to provide mechanical support as seen in:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II, and III are correct
| I: | prop roots of banyan |
| II: | stilt roots of maize |
| III: | betel/black where nodes and internodes bear roots that help in climbing |
2. Only I and III are correct
3. Only II and III are correct
4. I, II, and III are correct
Subtopic: Modification of Roots | Modifications of Stem |
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Runner, a stem modification for vegetative propagation, is found in all of the following except:
1. Cyanodon dactylon
2. Oxalis
3. Pistia
4. Marsilea
1. Cyanodon dactylon
2. Oxalis
3. Pistia
4. Marsilea
68%
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How many of the given pairs are correctly matched?
1. 1
2. 2
3. 3
4. 4
| Leaf modification for | Example | |
| A: | Protection | Argemone |
| B: | Mechanical support | Pea |
| C: | Storage of food | Onion |
| D: | Trapping insects | Nepenthes |
2. 2
3. 3
4. 4
Subtopic: Modification of Leaf |
From NCERT
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Regarding regions of roots in angiosperms
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II, and III are correct
| I: | the apex is covered by a thimble-like structure called the root cap |
| II: | cells of the region of meristematic activity divide repeatedly |
| III: | Root hairs are found in the region of elongation |
2. Only I and III are correct
3. Only II and III are correct
4. I, II, and III are correct
Subtopic: Morphology of Roots |
84%
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The phyllotaxy shown in the given figure is seen in:
1. Alstonia
2. Calotropis
3. China rose
4. Guava
1. Alstonia
2. Calotropis
3. China rose
4. Guava
Subtopic: Morphology of Leaf |
78%
From NCERT
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How many of the given pairs are correctly matched?
1. 0
2. 1
3. 2
4. 3
| A: | Actinomorphic flower | Pea |
| B: | Zygomorphic flower | Mustard |
| C: | Asymmetric flower | Canna |
2. 1
3. 2
4. 3
Subtopic: Flower & Parts of Flower |
75%
From NCERT
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The ovary is superior and the flower is hypogynous in:
1. Guava
2. Brinjal
3. Cucumber
4. Ray florets of sunflower
1. Guava
2. Brinjal
3. Cucumber
4. Ray florets of sunflower
Subtopic: Flower & Parts of Flower |
84%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I [Aestivation type] |
Column II [Example] |
||
| A. | Valvate | P. | Lady’s finger |
| B. | Twisted | Q. | Bean |
| C. | Imbricate | R. | Calotropis |
| D. | Vexillary | S. | Cassia |
| A | B | C | D | |
| 1. | P | R | Q | S |
| 2. | R | P | Q | S |
| 3. | R | P | S | Q |
| 4. | P | R | S | Q |
Subtopic: Flower & Parts of Flower |
84%
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How many of the given statements are true?
1. 1
2. 2
3. 3
4. 4
| A: | When stamens are attached to the petals, they are epipetalous as in brinjal |
| B: | When stamens are attached to the perianth, they are epiphyllous as in lily |
| C: | The stamens may be united into one bunch or one bundle (monadelphous) as in China rose |
| D: | There may be a variation in the length of filaments within a flower, as in Salvia and mustard |
2. 2
3. 3
4. 4
Subtopic: Flower & Parts of Flower |
83%
From NCERT
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