The organism that can carry out both autotropic and heterotrophic modes of nutritions is
Chlamydomonas
Eudorina
Euglena
Spirogyra
Correct answer is C
Euglena use their chloroplasts to produce nutrients through photosynthesis. It is a dual organism as it can act both as an autotroph, making its own food, and heterotroph, feeding on other substances.
An example of osmosis in plants is the
movement of water through the xylem
loss of water vapour from the stomata
translocation of food through the phloem
absorption of water from the soil by the root
Correct answer is D
Osmosis is responsible for the ability of plant roots to draw water from the soil. Plants concentrate solutes in their root cells by active transport, and water enters the roots by osmosis.
Which of the following cell organelles is the site for the production of ATP?
Lysosome
Nucleus
Mitochondrion
Ribosome
Correct answer is C
The production of ATP happens in the mitochondrion, which likewise exists in both animals and plants.
an electric motor is a machine that converts
mechanical energy into electrical energy
electrical energy into mechanical energy
high voltage to low voltage
low voltage to high voltage
Correct answer is B
No explanation has been provided for this answer.
Which of the following organisms cannot exist freely on its own?
Chlamydomonas
Amoeba
Paramecium
Plasmodium
Correct answer is D
The plasmodium is a single-celled parasite that multiplies in red blood cells of humans as well as in the mosquito intestine. Hence, it doesn't live freely.