Questions
The largest structure in the nucleus of eukaryotic cells that primarily serves as the site of ribosome synthesis and assembly is
- nucleoid
- nucleolus
- vesicle
- cisterna
Which of the following possess a water vascular system?
- Arthropods
- Echinoderms
- Annelids
- Molluscs
Which of the following statements is correct regarding the nomenclature of species?
- Both genus and species are printed in italics.
- In both genus and species, the first letters are in capitals.
- Genus is written after species.
- The first letter of genus is in lowercase and that of species is in capitals.
In which of the following diseases is the liver affected?
- Pneumonia
- Hepatitis
- SARS
- Amoebiasis
Which of the following elements is essential for root growth?
- Zn
- Ca
- Mo
- S
Which of the following is the function of Mg in plants?
- Energy transfer
- Stomatal opening
- Synthesis of chlorophyll
- Translocation of carbohydrates
Which of the following statements is not true about fossil fuels?
- They cause air pollution on combustion.
- They are a source of energy.
- They are non-conventional energy sources.
- They are formed from biomass.
Which of the following types of movement is shown by tendrils in response to touch?
- Phototropism
- Thigmotropism
- Thermotropism
- Geotropism
Which of the following is not a fossil fuel?
- LPG
- Petroleum
- Natural gas
- Biogas
- Coal
Acid rain corrodes marbles of a monument. What is this phenomenon called?
- Marble acidosis
- Marble poisoning
- Marble cancer
- Marble canker
Plasma membrane
- helps in protein synthesis
- regulates the passage of water only into and out of the cell
- regulates the passage of water and dissolved substances into and out of the cell
- protects the organelles of the plant cell
The growth in plants is limited to certain regions. Which tissues are present in such regions?
- Meristematic tissues
- Parenchymatous tissues
- Collenchyma tissues
- Schlerenchyma tissues
Which of the following are the symptoms of rabies (a viral disease)?
- Fever, sore throat and high pulse rate
- Deficiency of immune system, fever and loss of weight
- Hydrophobia, fever and headache
- Headache, paralysis and fever
- None of these
What is the full form of HIV?
- Human Immuno Virus
- Human Immune Supplement Virus
- Human Immuno Deficiency Virus
- Human Immunity Viral Infection
It is important to conserve forests and wildlife in order to
- protect biodiversity
- generate revenue
- support industry
- generate resources
Which greenhouse gas is produced by the burning of fossil fuels?
- Hydrogen sulphide
- Oxygen
- Carbon dioxide
- Carbon monoxide
Which of the following is a connecting link between reptiles and birds?
- Archaeopteryx
- Platypus
- Whale
- Echidna
Shreya’s mother told her not to open the refrigerator for long. What could be its possible reason?
- It results in the loss of temperature.
- It results in the leakage of CFCs.
- It results in increase in temperature.
- It results in the leakage of oxides of sulphur.
Identical twins arise when
- sperm divides into two halves
- two sperms fuse with one ovum
- egg divides into two halves
- one sperm fuses with two ova
Which of the following statements is incorrect regarding kidneys?
- The kidneys are the main excretory organs.
- Each kidney is bean-shaped and located in the abdomen.
- Kidneys are present one on either side of the backbone.
- The right kidney is placed a little higher than the left kidney.
- Function of kidney is also to regulate pH of the blood.