Which of the following organelles contain DNA?
(i) Mitochondria (ii) Chloroplasts (iii) Golgi bodies (iv) Ribosomes
(i) and (ii)
(ii) and (iii)
(i) only
(iv) only
A.
(i) and (ii)
Both mitochondria and chloroplasts are semi- autonomous organelles as they have their own DNA, RNA and 70S ribosomes. Chloroplast DNA is bigger than mitochondrial DNA. However, genetic information in both DNAs is limited.
Maximum absorption of light occurs in the region of
400 - 700 nm
700 - 900 nm
1000 - 1200 nm
1500 - 2000 nm
In which part of mitochondria does ATP synthesis occur?
F1
F0
Cristae
Inner membrane of mitochondria
Assertion: Mitochondria and chloroplasts have their own genome.
Reason: Endoplasmic reticulum and Golgi body are the cell organelles which have their own DNA.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : Pili are tubular structures present in bacteria which help in conjugation.
Reason : Formation of pili is controlled by F+ or fertility factor.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
Assertion : In opposite phyllotaxy two leaves are borne on the opposite sides of a single node.
Reason : Opposite phyllotaxy is seen in China rose and Oleander.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
In bacteria respiration occurs in
cytoplasmic membrane
mitochondria
nuclear membrane
endoplasmic reticulum
