Monoecious plant of Chara shows the occurrence of:

1.	Upper oogonium and lower antheridium on the same plant
2.	Antheridiophore and archegoniophore on the same plant
3.	Stamen and carpel on the same plant
4.	Upper antheridium and lower oogonium on the same plant

Meiosis occurs in
1. Megaspore
2. Meiocyte
3. Conidia
4. Gemmule

Which one of the following is wrong about Chara?

Which one of the following shows isogamy with nonflagellated gametes?
1. Ectocarpus
2. Ulothrix
3. Spirogyra
4. Sargassum

Which one of the following generates new genetic combinations leading to variation?
1. Nucellar polyembryony
2. Vegetative reproduction
3. Parthenogenesis
4. Sexual reproduction

In which set of organisms does external fertilization occur
1. Echinodermata and mosses
2. Hemichordata and ferns
3. Amphibians and algae
4. Reptiles and gymnosperms

Grafting is not successful in monocots but is successful in dicots because they have:
1. Vascular bundles arranged in a ring
2. Cambium for secondary growth
3. Vessels with elements arranged end to end
4. Cork cambium

A scion is grafted on a stock. The quality of fruits produced will depend upon the genotype of:
1. Scion
2. Stock
3. Both 1. and 2.
4. None of the above

Gemmule formation is a common mode of asexual reproduction in
1. Paramecium
2. Hydra
3. Sponges
4. Yeast

A prominent Indian botanist noted chiefly for his invention of the technique of test-tube fertilization of angiosperms is: