In which plants' life cycle does double fertilization occur? seedless plants nonvascular plants gymnosperm plants angiosperm plants

The correct answer would be angiosperm plants.

Double fertilization is an event that exclusively takes place in angiosperms and is completely absent in gymnosperms.

During this event, two male gametes are released in the cytoplasm of the synergid. One male gamete fuses with the nucleus of the egg cell in order to form a zygote and other male gamete fuses with the polar nuclei and produce triploid primary endosperm nucleus (PEN).

synapse nervous system

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.