Amphibolic Pathway

If sexual reproduction takes place between the filaments of Rhizopus of different strains, one with $80$ nuclei and another with $24$ nuclei, what would be the total number of spores of different strains put together?

Study the following lists

The correct match is:

Which sequence is according to increasing molecular weight?

Entry of pollen tube into the ovule through chalaza was first discovered by Treub in a xerophyte. This plant is associated with a pair of characters given below

(I) Unisexual flowers

(II) Sessile flowers

(III) Centripetal arrangement of flowers

(IV) Bisexual flowers

Study the following lists:

The correct match is:

Regarding vivipary, the incorrect statement is

In organisms exhibiting external fertilization, chances of syngamy are enhanced by

Significance of pollen tube in seed plants is

The farmers can keep on using the hybrid seed to raise new crop year after year, and they do not have to buy hybrid seeds (which is too expensive) every year, if the hybrid is made

Inbreeding depression is due to

The asymmetric spindle is formed during the development of:

Polyembryony is present in

Pollen prepotency promotes:

Formation of seeds without fertilization is called

Free nuclear endosperm is formed due to

In hybridization emasculation and bagging are useful respectively to avoid

Apospory is defined as

The formation of fruits without fertilization is known as

When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is?

In the formation of $50$ zygotes in a tobacco plant, the minimum number of meiosis involved will be