Which of these is not a characteristics of a wind pollinated flowers?
A smaller quantities of sticky pollen produce
Feathery styles of stigmas pendulously hang outrside the flower
small inconspicuous scentless flower
large anthers which are loosley attached to the filament
Light pollen grains produced in large quantities from the anthers
Correct answer is A
Wind-pollinated grains are non-sticky and light, to ensure they can be blown by the wind.
Only the tip of the seedling received the light
The light was not strong enough
The seedlings were rather too young
The tip of the seedling may have been covered
The box containing the seedling should have been placed on a laboratory bench
Correct answer is A
Plants growing with an unshaded light source will grow straight up towards the sun because auxin is evenly distributed all around the shoot. Plants are able to “see” light using the tips of the plant shoots.
pulmonary artery
lungs
Heart
liver
aorta
Correct answer is D
Blood circulation holds in the circulatory system, the liver is a part of the digestive system. Hence, the liver can't be a part of the circulation process.
Cholera
Bilharzia
River blindness
Malaria
Sleeping sickness
Correct answer is A
Cholera is a water-borne disease hence, it cannot be contacted by the farmer.
Tap water
a very strong sugar solution
a weak sugar solution
a very weak salt solution
distilled water
Correct answer is B
When a plant cell is put in highly concentrated solution, it increases the pressure on the cell. Hence, plasmolysis holds in a highly concentrated solution.