Atlas of plant and animal histology

Choose true or false. Each right answer scores 1, and each wrong answer scores -1. Not answered questions score 0.

1) The pollen tube emerges from the pollen grains once it comes into contact with the stigma.

2) Only one haploid nucleus is produced in each pollen grain of angiosperms that fertilizes the egg cell to give rise to the seed.

3) Dicotyledon seeds contain two embryos.

4) The seed endosperm of angiosperms is formed from the fusion of three nuclei.

5) The perisperm is the storage tissue of some seeds, and it is formed from the nucellus.

6) The tegmen and testa form the coat of the seeds.

7) The fruit results from the differentiation of the ovary walls.

8) The endocarp is composed of the pericarp and exocarp.

9) A dehiscent fruit does not release the seed during maturation.

10) The hard inner part of the peach is the protective outer coat of the seed.

11) The dotted line encloses the tegmen, a protective layer of the seed.

12) The dotted line delimits the mesocarp.

13) The dotted line encloses the mesocarp.