Biology (NEST)
Comprehensive biology quiz covering human anatomy, reproductive systems, genetics, evolution, and physiology
Questions
Name the passage through which testis descend permanently into respective scrotal sacs during the seventh month of development.
- Inguinal canals
- Tunica albuginea
- Tunica vaginalis
- Testicular lobules
- Semiferous tubules
Which of the following is an example of inheritance of skin colour in human beings?
- Epistasis
- Gene linkage
- Polygenic inheritance
- Codominance
- None of these
Which of the following statements is/are true for vasa deferentia?
- They arise from epididymis.
- They are slightly coiled in the scrotum and straight in the abdomen.
- Their lining has stereocillia.
- They carry spermatozoa from cauda epididymis to ejaculatory ducts.
- All of the above
________ are about 2 cm long, thin walled tubules that pass through the prostate gland and open into the urethra.
- Vasa efferentia
- Vasa deferentia
- Epididymes
- Ejaculatory ducts
- Urethra
Which hormone regulates the condition of the endometrium of the uterus?
- Luteinising hormone
- Estrogen
- Progesterone
- Testosterone
- Luteotropic hormone
Which of the following is/are the evolutionary link(s) between mammals and reptiles?
- Peripatus
- Balanoglossus
- Archaeopteryx
- Ornithorhyncus
- Both 1 and 2
Which organism exhibits polarity in regeneration?
- Albino snake
- Salamander
- Planaria
- Human
- Newt
Name the glands that stimulate contraction in female reproductive tract and help the meeting of sperm and ovum in oviduct.
- Prostate glands
- Cowper's glands
- Prostaglandins
- Pituitary glands
- Preputial glands
The enamel of a tooth is secreted by
- odontoblast
- osteoblast
- ameloblast
- chrondoblast
- None of these
_______ accumulates in the environment and may appear in the food chain.
- Biodegradable pollution
- Nonbiodegradable pollution
- Water pollution
- Air pollution
- Sound pollution
The fallopian tube is supported by a double fold of peritoneum in
- fimbriae
- mesosalpinx
- ostium
- ampulla
- isthmus
Which of the following organs acts as thermoregulator?
- Scrotum
- Urinary bladder
- Ovary
- Kidney
- Liver
After ovulation, graffian follicle regresses into
- corpus luteum
- corpus albicans
- corpus callosum
- corpus striatum
- None of these
In humans, placenta is
- endotheliochorial
- endothelial
- epitheliochorial
- dichorionic
- haemochorial
Which Mendelian law has the following concepts?
- Organisms inherit two alleles for each trait.
- When sex cells are produced (by meiosis), allele pairs separate, leaving each cell with a single allele for each trait.
- Law of codominance
- Law of independent assortment
- Law of segregation
- Law of incomplete dominance
- None of these
Morphallaxis refers to
- regeneration of lost parts like limb
- regeneration occurs mainly by the remodelling of existing tissues
- replacement of epidermal cells of the skin
- healing of wound
- All of the above
Which of the following is known as nurse cell?
- Nerve cell
- Sertoli cell
- Interstitial cell
- Epithelial cell
- None of these
Cardiac muscles are found in the
- eyes
- heart
- ear
- lungs
- kidneys
Name the organ which is responsible for filteration of blood and production of urine.
- Heart
- Lungs
- Kidneys
- Liver
- Duodenum
The lyctic enzyme released by a sperm is called
- acrosome
- ligase
- hyaluronidase
- amylase
- None of these