Health — Biology STD 10 — Question

How is poverty related to population? Explain.

Most leaves have the upper surface more green and shiny. Why?

Differentiate between members of the following pair with reference to what is asked in bracket.
Myopia and hyperopia (cause of the defect)

Differentiate between:
Renal cortex and Renal medulla.

What is a dihybrid cross? How did Mendel perform this cross?

Give reason :
Lawn grass is killed if salt is sprinkled on it.

Give the ratio of phenotype of these crosses.

Mention any two measures to minimise noise pollution.

Why do people have a common belief that the heart is located on the left side of the chest?

In a school experiment, students observed the growth patterns of bean plants placed near a window. They noticed that the plants bent towards the light coming through the window. Additionally, they conducted another experiment by placing the plants horizontally. After a few days, they ohserved that the roots grew downwards while the shoots grew upwards, demonstrating different types of tropic movements. Which types of tropic movements were observed in the bean plants during the experinents? Explain them,
Phototropism and geotropism are the tropic movements, noticed during the experiment.