Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

11.

 Match the following Columns.

Column I (organism) Column II (Connecting Link)
A. Echina 1. Between Annelida and Mollusca
B. Peripatus 2. Between Reptiles and Mammals
C. Neopilina 3. Between Annelida and Arthropoda
D. Protopterus 4. Between Pisces and Amphibian

  • A – 4; B – 3; C – 2; D – 1

  • A – 2; B – 3; C – 1; D – 4

  • A – 3; B – 1; C – 2; D – 4

  • A – 4; B – 2; C – 1; D – 3


B.

A – 2; B – 3; C – 1; D – 4

Organism Connecting Link
Echidna Between Reptile and Mammals
Peripatus Between Annelida and Arthropoda
Neopilina Between Annelida and Mollusca
Protopterus Between Pisces and Amphibia.

12.

Source of commercial chewing gum latex is

  • Hevea brasiliensis

  • Carica papaya

  • Ficus elastica

  • Achras sapota


D.

Achras sapota

The latex of some plants is commercially important such as

(i) Source of commercial rubber is latex of Hevea brasiliensis, Ficus elastica, Cryptostegia. Maniho glaziou
(ii) Source of chewing or chickle gum is latex of Achras sapota
(iii) Source of enzyme papain is latex of Carica papaya


13.

In which one of the family formations of endosperm doesn’t take place?

  • Orchidaceae

  • Cactaceae

  • Ranunculaceae

  • Malvaceae


A.

Orchidaceae

No endosperm formation takes place in the members of Orchidaceae, Podostemonaceae and Trapaceae families.


14.

In cardiac cycle maximum time is taken by

  • Atria systole

  • Atria diastole

  • Ventricle systole

  • Ventricle diastole


B.

Atria diastole

The cardiac cycle is the event during, which one heartbeat or one cycle of contraction (systole) and relaxation (diastole) of cardiac muscle occurs. A cardiac cycle consists of systole and diastole of atria and systole and diastole of ventricles. The time of cardiac cycle is in reverse ratio of the rate of heartbeat. In man, the heart rate is about 72 times/train, therefore time of a cardiac cycle is 60/72 -0.8 sec approx\

Time Taken Atria Ventricle
Systole Diastole Systole Diastole
0.1 sec 0.7 sec 0.03 sec 0.5 sec


15.

 Match the following Columns.

Column I (Cell Organelle) Column II (Discovered by)
A. Ribosome 1. Fontana
B. Nucleolus 2. Tolbert and Yamazaki
C. Glyoxysome 3. Palade
D. Peroxisome 4. Beevers

  • A – 1; B – 4; C – 2; D – 3

  • A – 3; B – 4; C – 1; D – 2

  •  A – 1; B – 3; C – 2; D – 4

  • A – 3; B – 1; C – 4; D – 2


D.

A – 3; B – 1; C – 4; D – 2

Cell Organelle Discovered by
Ribosome Palade
Nucleolus Fontana
Glyoxysome Beevers
Peroxisome Tolbert and Yamazaki

16.

A horse and a donkey can breed to produce mule which is an infertile animal. The infertility is because horse and donkey belong to different.

  • Class

  • Order

  • Species

  • Genus


C.

Species

A horse (Equus ferus caballus) and a donkey (Equus africanus asinus) can breed to produce mule, which is an infertile animal. The infertility is because horse and donkey belong to different species. Mule are medium weight animals that are more hardworking and long-lived than horse and donkey.


17.

The Sub-units of 80S ribosome will be

  • 40S, 40S

  •  60S, 40S

  • 60S, 20S

  • 55S, 25S


B.

 60S, 40S

60S and 40S are sub-units of eukaryotic (80S) ribosomes.


18.

Vegetative propagation of Bryophyllus takes place through

  • Bulbil

  • Corms

  • Leaf buds

  • Eyes


C.

Leaf buds

Vegetative reproduction in Bryophyllum takes place through leaf buds.


19.

Which one of the following is not correct pair of type of cancer and origin place?

  • Benign tumour – Non-cancerous tumour

  • Carcinomas – Cancer of epithelial tissues

  • Lymphomas – Haematopoietic cells tumour

  • Sarcomas – Cancer of glands (secretory tissues)


D.

Sarcomas – Cancer of glands (secretory tissues)

Sarcomas cancer originate in lymphatic tissues,connective tissues, muscles and bones.


20.

Pyloric sphincter guards the opening between

  • Stomach and Duodenum

  • Cardia and Fundus

  • Oesophagus and Stomach

  • Fundus and Pylorus


A.

Stomach and Duodenum

Pyloric sphincter guards are the opening between the pylorus of a stomach and the duodenum of the small intestine. It periodically permits partially digested food to leave the stomach and enter the duodenum.