Question

Choose the odd one out of the following terms given and name the

category to which the other three belong. (5)

I Cell wall, Centrosome, chloroplast, Leucoplast

II. Parenchyma, Collenchyma, Epidermis, Sclerenchyma

III. Yeast, Mould, Lactobacillus, Mushroom

IV. Humerus, Radius, Carpals, Tarsal

V. Pimples, Acne, Albinism, Black head​

Answer 1

Cell Wall

Epidermis

Lactobacillus

Tarsal

Albinism

Answer 2

Following are the odd ones from the given groups:-

• I - Centrosome, II- Epidermis, III - Lactobacillus, III - Tarsals, IV -Albinism
• In group I, Centrosome is found only in animal cells whereas the other three - Cell walls, chloroplast, Leucoplast are absent in animal cells and found only in plant cells.
• In group II, the Epidermis is the layer above the dermis i.e. the outer covering of the skin whereas the other three are types of simple tissues.
• In group III, Lactobacillus is a type of good bacteria (Prokaryote) found in curd as well as gut which helps in digestion and maintaining a healthy microbiome in the gut whereas the other three are types of fungi(Eukaryote).
• In group IV, Tarsal is the bone of the leg (bone of toes) whereas the other three are bones of the hand. The humerus is the bone attached to the shoulder joint - further in the arm, attached to the radius and ulna - further attached to bones of fingers - Carpals and metacarpals.
• In group V, all are types of Acne/blemishes except Albinism which is a type of disease in which melanin pigment is not produced that protects the body from harmful UV rays of the Sun leading to whitening or discoloration of the body.