Master NEET Zoology with topic-wise questions. Tailored for NEET students, these questions strengthen your Biology preparation.
During spermatogenesis, a critical step involves the conversion of spermatids into spermatozoa. This intricate process, known as spermiogenesis, includes several key morphological changes. Which of the following is NOT a characteristic feature of spermiogenesis?
Formation of the acrosome
Condensation of the nucleus
Development of the flagellum
Meiotic divisions
A couple experiencing infertility undergoes diagnostic testing. The male partner's semen analysis reveals normal sperm count and motility, but a significantly high percentage of spermatozoa with abnormal morphology. Which of the following defects is MOST likely contributing to their infertility?
Defects in the acrosome preventing proper penetration of the zona pellucida
Reduced fructose levels in the seminal fluid impairing sperm motility
Blockage in the vas deferens preventing sperm transport
Low levels of testosterone leading to reduced sperm production
Sperms in Ascaris are characterized by one unusual feature, i.e.,
Long form
Lack of flagellum
Motility
Ability to induce meiosis in egg
Human male ejaculates …A… to …B… million sperm. Atleast …C… should have normal shape and size and …D… should show vigorous motility. Here A, B, C and D refers to
A=20, B=150, C=4, D=32
A=10, B=200, C=10, D=40
A=5, B=50, C=2, D=20
A=30, B=100, C=6, D=50
Human male ejaculates …A… to …B… million sperm. Atleast …C… should have normal shape and size and …D… should show vigorous motility. Here A, B, C and D refers to
A = 20, B = 150, C = 4, D = 32
A = 10, B = 200, C = 10, D = 40
A = 5, B = 100, C = 2, D = 20
A = 30, B = 250, C = 5, D = 50
For normal fertility, _______ % sperm shape and size, ______ % vigorous motility
60%, 40%
40%, 60%
50%, 50%
70%, 30%
