Biology questions
20584 published questions with worked solutions.
- Which of the following is not a pre-fertilization event?
- Continued self-pollination results in
- Bisexual flower have
- Self-incompatibility is
- Self-incompatibility is a device for 1. Ensuring cross-pollination 2. Preventing self-fertilization 3. Ensuring...
- Device to discourage self-pollination or increase cross-pollination is
- Cross-pollination results in
- Majority of plants useNot in NEET syllabus
- Xenogamy or cross-pollination is performed by 1. Abiotic agencies 2. Biotic agencies 3. Insects only Choice the correct option...
- Match the following column I with column II. Column I (Agents of pollination) A. Wind B. Water C. Insects D. Birds E. Bats Column...
- Characteristics of wind-pollinated pollen is, they are
- Myrmecophily occurs through
- Wind-pollinated flowers often have
- Cross-pollination brings about heterogeneity in the plant. It is done by many agents in plants. Match the correct pairs of plant...
- The morphological self-incompatibility occurs in flowers having heterostyly. It promotes
- Water-pollinated flowers are 1. Small, colorless and inconspicuous. 2. Odorless and nectarless. 3. Produces light, dry and...
- Bird-pollinated flowers can be 1. Cup-shaped 2. Urn-shaped 3. Rich in nectar 4. Bright in color 5. Produces large quantities of...
- Generally pollen tube enters through
- Match of the following column I with column II. Column I A. Porogamy B. Chalazogamy C. Misogamy Column II 1. Pollen tube enters...
- How many nuclei take part in double fertilization of flowering plants?