Question : Which of the following cell structures is present only in plant cells?

Option 1: Mitochondria

Option 2: Cell wall

Option 3: Cell membrane

Option 4: Vacuole

Question : What is the length of a bacterial cell?

Option 1: 3 to 5 µm

Option 2: 1 to 40 µm

Option 3: 30 to 50 µm

Option 4: 0 to 3 µm

Question : Grey hair is caused due to

Option 1: ageing of epidermal cells

Option 2: death of dermal cells

Option 3: loss of sebum in epidermal cells

Option 4: loss of melanin in epidermal cells

Question : Directions: Arrange the following words as per their order in the dictionary.
1. Management
2. Manufacture
3. Maintain
4. Manner

Option 1: 1, 2, 3, 4

Option 2: 3, 2, 4, 1

Option 3: 4, 3, 2, 1

Option 4: 3, 1, 4, 2

Question : Directions: If × means addition, + means multiplication, + means subtraction, and – means division, then what is the value of the following expression?
16 – 4 × 12 + 3 ÷ 18

Option 1: 24

Option 2: 18

Option 3: 30

Option 4: 22