PART - 2 CH - 7 How do Organisms Reproduce ? — Science STD 10 — Question

What is the angle of reflection when a ray of light falls normally on a mirror?

What is the misuse of prenatal sex determination?

List two methods of producing magnetic fields.

What is the angle of incidence for a ray of light passing through the centre of curvature of a concave mirror?

Name the devices whose working is based on the magnetic effect of electric current.

What determines the rate at which energy is delivered by a current?

Who forms conducting tubes in higher plants? What are transported through it?

How does the potential difference divide itself in a series combination of resistors?

Why does the Sun appear white at noon?

Arrange following events in correct sequence :
(a) Division of zygote to form embryo.
(b) Rhythmic contractions of muscles in the uterus.
(c) The lining of uterus thicken and richly supplied with blood.
(d) Embryo develops organs to become foetus.
(e) Embryo gets nutrition with the help of placenta.