Question

Double fertilization and triple fusion were discovered by.

• A. Hofmeister
• B. Nawaschin and Guignard
• C. Leeuwenhoek
• D. Strasburger

Answer 1

Answer: (B)

Nawaschin and Guignard

•Hofmeister gave organisation of embryo sac and also showed microspore tetrad formation.

•Nawaschin while working on Lilium and Fritillaria showed the fusion of one male gamete with the egg (syngamy) and of the other male gamete with polar nuclei (triple fusion). Thus, he discovered double fertilisation and gave the concept of triple fusion. The discovery of double fertilisation by Nawaschin was independently confirmed by Guignard.

•Leeuwenhoek was the first to observe microbes under microscope.

•Strasburger while working on Monotropa, observed the actual fusion of the male gamete with the female gamete (i.e. egg) and discovered syngamy.

So, the correct answer is B.