Reproduction in Lower and Higher Plants — BIOLOGY STD 12 Science — Question

Fill in the blanks.In aquatic ecosystems, the limiting factor for the productivity is _________.

____________ percent of the forests have been lost in the tropics.

____________ is the vital link that ensures continuity between one generation to the next.

Micropyle is the single cotyledon found on the seed coat. Do you agree? Also, state its function.

The process of delivery of the foetus, is called _______.

An orchid growing as an epiphyte on a mango tree, is an example of .

Day ____________ of the menstrual cycle are called fertile period.

The exine of pollen grains is made up of _______.

Which of the following technique use capture and detecting antibody?

1. Direct ELISA
2. Indirect ELISA
3. Sandwich ELISA
4. All of the above

The secondary oocyte completes its meiosis II when a sperm comes in contact with it and forms a large cell, the _______ and a second polar body.