Explanation

• Cellulose is the main component of the cell wall in plant cells, providing strength, rigidity, and shape to the cell.
• It is a complex carbohydrate made up of glucose molecules. 
• It is responsible for maintaining the cell's structure and supporting its growth.

Explanation

Lightning, along with high temperature and pressure, helps convert atmospheric nitrogen (N2) into usable forms like nitrates and ammonia.

These compounds are then absorbed by plants and enter the food chain, supporting life on Earth.

Explanation

Tulips, lilies, daffodils, and onions reproduce through bulbs, which are underground storage organs.

Bulbs store food and help the plant survive unfavorable conditions.

Explanation

The nucleus is the control center of the cell, regulating all cellular activities, including growth and reproduction.

It contains the cell’s genetic material (DNA).

Explanation

In dicot seeds, cotyledons store nutrients that nourish the growing embryo.

They often also help in the early stages of photosynthesis after germination.

Explanation

Nitrogen is the most extensively used nutrient for field crops as it promotes leaf and stem growth, especially in cereals.

It is essential for photosynthesis and overall plant development.

Explanation

Explanation

• 70 mg/dL: This is a low blood sugar level, indicating hypoglycemia. 
• 120 mg/dL: This is within the normal to pre-diabetic range, depending on other factors. 
• 100 mg/dL: This is a normal blood sugar level and does not indicate diabetes

Explanation

 A blood pressure reading of 60/90 mmHg is considered low blood pressure (hypotension). 

Explanation

A blood sugar level of 250 mg/dL is considered hyperglycemia (high blood sugar), especially 

Normal blood sugar is 70–99 mg/dL

fasting, low is below 70 mg/dL,

high is above 126 mg/dL fasting or 200 mg/dL after meals.