Explanation

• Phloem is the vascular tissue.
• It responsible for transporting sugars and other organic compounds produced in the leaves (by photosynthesis) to all parts of the plant.

Explanation

A converging lens (usually convex) bends parallel rays of light to meet at a single point (focus).

It is commonly used in magnifying glasses and optical instruments.

Explanation

Systematic errors are caused by faulty or improper functioning of instruments, or by a flaw in the experimental design.

These errors are consistent and repeatable, and can be identified and corrected.

Explanation

• When fuel is burned, carbon dioxide gas (CO₂) is primarily produced.
• The combustion of fuel, particularly hydrocarbons, typically results in the formation of carbon dioxide and water vapor (H₂O).

Explanation

• Carbon Dioxide (CO2) is the gas used to produce energy in the form of glucose during photosynthesis.
• CO2 is the source of carbon atoms, which are used to synthesize glucose and other organic compounds during photosynthesis.

Explanation

• Photosynthesis requires two main materials: Water (H2O) and Carbon Dioxide (CO2), in addition to Light Energy.
• Water is the source of hydrogen atoms, which are used to synthesize glucose and other organic compounds.
• While Carbon Dioxide provides the carbon atoms.

Explanation

The cell is the smallest unit of life.

Cells are called ‘structural’ and ‘functional’ units for a reason.

Cells are made of molecules which are in turn made up of atoms.

“Cell is the unit of LIFE” is that a cell is the smallest living entity in a living system.

Explanation

• There is no such nitrogenous base as "Tracil or Uracil".

The nitrogenous bases are:

1. Adenine (A)
2. Thymine (T)
3. Cytosine (C)
4. Guanine (G)

Explanation

• The electrons that have been knocked out of the outermost shell of an atom are free electrons, which are able to move freely and conduct electricity.

Explanation

The rate of flow of charge at a certain point is called the Electric Current.

- Formula: I = Q / t, where  

  - I = current (in amperes),  

  - Q = charge (in coulombs),  

  - t = time (in seconds).  

- Measured in Amperes (A).  

- Direction of current is taken as the direction of flow of positive charges (conventional current).