Q. No.The earliest land plants lacked true roots. What may have enabled them the most to colonize land?
| 1. | Symbiotic associations with fungi |
| 2. | Prostrate thalloid body |
| 3. | Motile antherozoids capable of reaching the egg through water |
| 4. | Parasitic and saprophytic modes of nutrition |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPlants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is
| 1. | Monocots | 2. | Dicots |
| 3. | Pteridophytes | 4. | Gymnosperms |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe giant Redwood tree (Sequoia sempervirens) is a/an
| 1. | Angiosperm | 2. | Free fern |
| 3. | Pteridophyte | 4. | Gymnosperm |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following Greek root word means "naked" and hence gives name to plants like cycas and pines?
| 1. | angeion | 2. | sperm |
| 3. | gymnos | 4. | gynos |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe term ‘strobilus’ in a gymnosperm defines a:
| 1. | collection of megasporophylls |
| 2. | collection of microsporophylls |
| 3. | site of sporangial development |
| 4. | collection of megasporophylls, microsporophylls and/or a site of sporangial development |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFemale sex organs of gymnosperms are called:
| 1. | Archegonia | 2. | Female strobili |
| 3. | Megasporangium | 4. | Megasporophyll |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyUnlike bryophytes and pteridophytes, in gymnosperms:
| 1. | the male and female gametophytes do not have an independent existence |
| 2. | the vascular tissue is poorly developed |
| 3. | the reproduction is dependent on water in most cases |
| 4. | the plants bodies are clearly differentiated into root, stem and leaves |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following regarding Cycas is incorrect?
| 1. | Pinnate leaves persist for a few years |
| 2. | Male and female cones are born on different plants |
| 3. | Coralloid roots are in association with cynobacteria |
| 4. | Homosporous gymnosperm |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn gymnosperms, the ovules are:
| 1. | not enclosed by any ovary wall before and after fertilization |
| 2. | not enclosed by any ovary wall only before fertilization |
| 3. | not enclosed by any ovary wall only after fertilization |
| 4. | enclosed by an ovary wall before and after fertilization |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCoralloid roots in Cycas are associated with nitrogen fixing:
| 1. | Rhizobium | 2. | Frankia |
| 3. | Azospirillum | 4. | Cyanobacteria |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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