Plastids are the unique organelles found in…….
a) photosynthetic prokaryotes
b) plants only
c) animals and fungi
d) all of these
Explanation: plastids are membrane bounded mostly pigment containing bodies present in cell
There are ……..main types of plastids.
a) two
b) three
c) four
d) five
Explanation: 1. Chloroplasts,
2. Chromoplast and 3. Leucoplasts
Which of the following plastids have green pigment chlorophyll in photosynthetic plants?
a) chloroplasts
b) chromoplasts
c) leucoplasts
d) all of these
Explanation: chlorophyll is an organic compound which helps the cell to absorb sunlight to manufacture food
Chlorophyll molecule resembles……..
a) haemoglobin
b) myoglobin
c) albumin
d) heparin
Explanation: the only difference is that chlorophyll has central Mg++ and haemoglobin has central Fe++ atom
What is the diameter of chloroplast?
a) 3-5nm
b) 6-10µm
c) 4-6nm
d) 10-20µm
Under electron microscope, chloroplasts show……..main components.
a) two
b) three
c) four
d) five
Explanation: 1. The envelope, 2. Stroma and 3. Thylakoids
