Stinging capsules (nematocysts) are found in

• wasp and honeybee

• scorpion and cobra

• sea pen and sea fan

• cactus and Venus flytrap

India is one of the twelve megadiversity countries with of genetic resources of the world

• 12.1%

• 18.1%

• 38.1%

• 8.1%

Which of the following is not an invasive species?

• Parthenium hysterophorus

• Nelumbo (lotus)

• Lantana camara

• Eichhornia crassipes

Intercalated discs are characteristic of muscles found in

• heart

• thigh

• urinary bladder

• stomach

In which of the following sets of organisms, does the external fertilization occur?

• Echinodermata and mosses

• Hemichordata and ferns

• Amphibians and algae

• Reptiles and gymnosperms

6.

Occurrence of triploid (3n) primary endosperm nucleus is a characteristic feature of

• Algae

• Gymnosperms

• Angiosperms

• Bryophytes

From the following groups, select the one which has only secondary metabolites?

• Arbrin, cellulose, arginine, tyrosine

• Glycine, gums, serine, diterpenes

• Carotenoids, phenylalanine, curcumin, rubber

• Conclavin-A, morphine, codeine, vinblastin

In a diploid cell, at which stage of cell cycle, the amount of DNA is doubled?

• G₁ and G₂ phase

• G₀ phase

• S, G₂ and M phase

• S phase

C₄ plants have better productivity because

• C₄ plants absorb more light

• C₄ plants absorb more CO₂

• C₄ plants does not carry photorespiration

• C₄ plants have more amount of RuBisCO

Match the source gland with its respective hormone and function and select the correct option.

• Source gland	Hormone	Function
  Anterior pituitary	Oxytocin	Contraction of uterine muscle

• Source gland	Hormone	Function
  Anterior pituitary	Vasopressin	Induces reabsorption of water in nephron

• Source gland	Hormone	Function
  Thymus	Thymosin	Proliferation of T- lymphocytes

• Source gland	Hormone	Function
  $\mathrm{\alpha }$- cells of islets of Langerhans	Glucagon	Uptake of glucose into the cell