Most weeds growing in a field of crops or on a lawn are broad leaved, in contrast to grasses and cereals which are narrow leaves. Selective weedkiller...

People are unable to focus on near objects. This occurs when the lens doesn't refract the light enough or the eyeball is too short. The image is broug...

Produced by the ovaries. Causes the lining of the uterus to grow. Stimulates the release of LH (which causes ovulation) and inhibits the release of FS...

Glucose, water and ions.

In a dialysis machine the patients blood flows between a partially permeable membrane surrounded by dialysis fluid. The dialysis fluid contains the sa...

Computers can give a more precise reaction time because they remove human error.Computers can record the reaction time to a millisecond so more accura...

Stimulates seed germination, stem growth and flowering.

In the testes.

Produced in the pituitary gland.Stimulates the release of an egg (ovulation) at day 14.

The tough supporting wall of the eye

Kidneys make urine by taking unwanted waste products out of your blood. They are involved in selective reabsorption.

Produced by the ovary by the remains of the follicle. Maintains the lining of the uterus. When the level of progesterone falls the lining of the uteru...

Auxin promotes growth in shoots and inhibits growth in roots.