Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
A: Endometrium is necessary for implantation of blastocyst. R: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.
Corpus luteum maintains endometrium via progesterone; its degeneration → menstruation.
Match List I (Interacting species) with List II (Name of Interaction):
| List I | List II |
|---|---|
| A. A Leopard and a Lion in a forest/grassland | I. Competition |
| B. A Cuckoo laying egg in a Crow's nest | II. Brood parasitism |
| C. Fungi and root of a higher plant in Mycorrhizae | III. Mutualism |
| D. A cattle egret and a Cattle in a field | IV. Commensalism |
Leopard/Lion → Competition; Cuckoo/Crow → Brood parasitism; Mycorrhizae → Mutualism; Egret/Cattle → Commensalism.
Statement I: Ligaments are dense irregular tissue. Statement II: Cartilage is dense regular tissue.
Ligaments are dense REGULAR; cartilage is a specialised connective tissue, not "dense regular".
Match List I with List II:
| List I (Disease) | List II (Pathogen) |
|---|---|
| A. Ringworm | I. Haemophilus influenzae |
| B. Filariasis | II. Trichophyton |
| C. Malaria | III. Wuchereria bancrofti |
| D. Pneumonia | IV. Plasmodium vivax |
Ringworm → Trichophyton; Filariasis → Wuchereria; Malaria → Plasmodium; Pneumonia → Haemophilus.
Match List I with List II:
| List I | List II |
|---|---|
| A. Vasectomy | I. Oral method |
| B. Coitus interruptus | II. Barrier method |
| C. Cervical caps | III. Surgical method |
| D. Saheli | IV. Natural method |
Vasectomy → Surgical; Coitus interruptus → Natural; Cervical caps → Barrier; Saheli → Oral pill.
Which of the following functions is carried out by cytoskeleton in a cell?
NCERT lists cytoskeleton roles as mechanical support, motility and shape maintenance.
Select the correct group/set of Australian Marsupials exhibiting adaptive radiation:
Only (B) lists Australian marsupials. Bobcat, mole, flying squirrel, lemur, anteater, wolf are placentals.
Which of the following statements are correct regarding female reproductive cycle?
A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle. B. First menstrual cycle begins at puberty and is called menopause. C. Lack of menstruation may be indicative of pregnancy. D. Cyclic menstruation extends between menarche and menopause.
B wrong (first cycle is menarche, NOT menopause). A, C, D are correct.
Broad palm with single palm crease is visible in a person suffering from:
Simian crease (single transverse palmar crease) is a classic Down syndrome feature.
Which one of the following symbols represents mating between relatives in human pedigree analysis?
A double horizontal line between the mating pair denotes a consanguineous (relative-to-relative) mating — option B.
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