Insect reproduction may be characterized by all of the following EXCEPT: ( ).
A: direct sperm transfer
B: copulatory organs
C: indirect fertilization
D: an ovipositor of the female
E: sperm storage in the sperm receptacle
A: direct sperm transfer
B: copulatory organs
C: indirect fertilization
D: an ovipositor of the female
E: sperm storage in the sperm receptacle
举一反三
- Choose the correct sentence below. A: Sperm and egg cells are haploid cells B: The sperm is haploid, but the egg is diploid C: Sperm and egg are diploid cells D: The sperm is diploid, but the egg is haploid
- Which of the following is NOT a public consensus A: A woman should have access to abortion or not. B: A female's ovum and a male's sperm are both clearly alive. C: When human personhood starts, the law must protect person. D: A female's ovum and a male's sperm are not yet human persons.
- The function of the testis is to produce sperm and male hormones, the following structure which produces sperm is ( ). A: Tubulus rectus B: Interstitial cell C: Convoluted seminiferous tubule D: Mediastinum testis
- Which of the following is a germ cell? A: cells of the gonads B: intestinal cells C: sperm and eggs D: zygotes
- Erichthonius was born from the sperm Hephaestus laid on the earth.