Question

identify the odd terms in each set and name the category to which the remaining three belong

(1) pleura , pericardium, meninges, spinal cord

(2) cortex, pelvis, retina, medulla

(3) diplococcus, salmonella typhi, plasmodium, vibrio cholerae

(4) oxygen, carbon dioxide, water, ammonia ​

Answer 1

Answer:

(i) The odd term is glucagon as rest three terms, haemoglobin, iodopsin and rhodopsin are pigments of RBC, cone and rod.

(ii) The odd term is uterus as other three terms, urethra, urinary bladder and ureter are parts of excretory system.

(iii) The odd term is phagocytosis as other three processes, transpiration, photosynthesis and guttation are seen in plants.

(iv) The odd term is photon as other three terms, cyton, aron and dendron are parts of nerve cells or neuron.  

(v) The odd term is insulin as other three terms, oxytocin, prolactin and progesterone are female reproductive/sex hormones.

Explanation:

Answer 2

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⑴ pleura , pericardium, meninges, spinal cord

Answer :→ Spinal cord

• Spinal cord is the odd one one out. While pleura is the lung cavity, pericardium is the membrane enclosing the heart and meninges are the layers enclosing the brain and the spinal cord.

⑵ cortex, pelvis, retina, medulla

Answer :→ Pelvis

• Pevis is the part of female reproductive system and other three are part of head.

⑶ diplococcus, salmonella typhi, plasmodium, vibrio cholerae

Answer :→ Plasmodium

• Plasmodium is the odd one out as it is a protozoan while the rest are bacteria.

⑷ oxygen, carbon dioxide, water, ammonia

Answer :→ Oxygen

• Oxygen as it is the only element amongst the group.