Explanation

• The evaporation of water from the leaves, also known as transpiration, creates a negative pressure that pulls water up the xylem from the roots to the leaves.
• This process is known as the transpiration-cohesion theory.

Explanation

• A proportion is an equation that states that two ratios are equal.
• It is often written in the form: a/b = c/d
• Where a, b, c, and d are values or quantities, and the ratio a/b is equal to the ratio c/d.
• For example: 2/4 = 3/6

Explanation

• Proportion is a mathematical concept, not a step in the biological method.
• The biological method involves observation, data collection, and experimentation to develop and test hypothesis.

Explanation

• Members of the same species form a population, not members of different species.
• A population is a group of individuals of the same species that live in a specific geographic area and can interbreed.

Explanation

Magnesium sulfate is a drug commonly used to control fits (seizures) in a pregnant lady Particularly in cases of eclampsia and severe preeclampsia.

It acts as an anticonvulsant and helps prevent seizures in these conditions.

Explanation

Kayser–Fleischer (KF) rings are a common ophthalmologic finding in patients with Wilson disease.

They are caused by the deposition of copper in the Descemet's membrane of the cornea

And are typically observed through slit-lamp examination.

The presence of KF rings is an important diagnostic feature for Wilson's disease

A genetic disorder that leads to excessive accumulation of copper in the liver, brain, and other tissues.

Explanation

Lemon is rich in Vitamin C, which helps boost immunity and improve skin health.

Other citrus fruits like oranges and lime are also high in Vitamin C.

But among the given options, lemon contains the most.

Explanation

The ion primarily involved in initiating and regulating muscle contraction is calcium (Ca²⁺).

While magnesium (Mg²⁺) also plays a role in muscle relaxation and overall function,

Calcium is the key player in triggering the contraction process. 

Explanation

The lungs are the primary organs responsible for breathing.

They allow oxygen to enter the body and carbon dioxide to be expelled.

The heart circulates the oxygenated blood, but the lungs are where the exchange of gases takes place.

Explanation