Biology (Class - XII)
This test is aimed at students studying in class 12. The test covers the whole syllabus of Class XII.
Questions
Which enzyme is used to treat fungal cells in order to break them open and release DNA?
- Lysozyme
- Cellulase
- Chitinase
- Protease
- Ribonuclease
The testa of the seed develops from
- ovary wall
- ovule
- ovary
- inner integument
- outer integument
Who is called the father of genetics?
- Antonie van Leeuwenhoek
- Hippocrates
- Gregor Mendel
- Carl Linnaeus
- Charles Darwin
Which of the following terms refers to the sequence of successional stages in a dry habitat?
- Hydrosere
- Lithosere
- Psammosere
- Xerosere
- Prisere
Which of the following is related to bee keeping?
- Apiculture
- Pisciculture
- Mariculture
- Poultry farming
- Dairy farming
Barnacles attached to the back of a whale are an example of
- amensalism
- commensalism
- parasitism
- mutualism
- competition
Which of the following microbes is/are used as biological control agent(s)?
- Azotobacter
- Baculoviruses
- Anabaena
- Azospirillum
- Nostoc
Which of the following terms represents the formation of seeds without fusion of gametes?
- Allogamy
- Agamospermy
- Autogamy
- Geitonogamy
- Parthenocarpy
The residual, persistent nucellus inside some seeds is called
- hypocotyl
- coleoptile
- perisperm
- coleorhiza
- epicotyl
Which of the following is the cause of the minamata disease?
- Cadmium
- Fluoride
- Mercury
- Nitrate
- Arsenic
Which of the following is a sex-linked recessive disorder?
- Thalassaemia
- Sickle cell anaemia
- Phenylketonuria
- Haemophilia
- Rheumatoid arthritis
Which of the following microbes is used to make Swiss cheese?
- Clostridium butylicum
- Penicillium roqueforti
- Propionibacterium sharmanii
- Penicillium comemberti
- Acetobacter aceti
Which enzyme is used in recombinant DNA technology to make cuts at specific positions within the DNA?
- DNA polymerase
- RNA polymerase
- Restriction exonuclease
- Restriction endonuclease
- DNA ligase
A species having different areas of geographical distribution is called
- allopatric species
- sympatric species
- synchronic species
- keystone species
- allochronic species
The amount of living material present in different trophic levels per unit area at a given time is known as
- Net Primary Productivity
- Gross Primary Productivity
- Secondary Productivity
- Standing State
- Standing Crop