Variety among amino acids is produced due to_____.

1. 1. R group
   2. NH2 group
   3. COOH group
   4. None of these

Tibia is a bone found in the_____.

1. 1. Skull
   2. Arm
   3. Face
   4. Leg

The molecules of living matter that provide building blocks are mostly based on_____.

1. 1. Nitrogen
   2. Carbon
   3. Hydrogen
   4. Ammonia

The scientific study of livings is called _____.

1. 1. Anatomy
   2. Geology
   3. Zoology
   4. Biology

Midgut in cockroach is a short narrow tube called_____.

1. 1. Stomach
   2. Hepatic caeca
   3. Gizzard
   4. Rectum

Sessile flowers have _____.

1. 1. No scent
   2. No pedicles
   3. Irregular shape
   4. No petals

Which of the following are responsible for the detection of changes in environment?

1. 1. Receptors
   2. Neurons
   3. Effectors
   4. None of these

Purine and pyrimidine metabolism results in production of_____.

1. 1. Creatinine
   2. Xanthine
   3. Trimethyamine oxide
   4. All of these

Light reaction takes place on/in_____.

1. 1. Thylakoid
   2. Grana
   3. Storma
   4. Chloroplast

Trisomy 21 is most common in mothers of the _____age group.

1. 1. 40 to 45
   2. 15 to 19
   3. 20 to 34
   4. 35 to 39