86. Which of the following acts as an insulator against heat, cold and as a shock-absorber in the body ?

1. 1. Dermis

   
   
   

   2. Epidermis

   
   
   

   3. Subcutaneous fat layer

   
   
   

   4. None of the above

   
   
   

---

1. View Hint View Answer Discuss in Forum

   Subcutaneous fat layer

   Correct Option: C

   Subcutaneous fat layer

---

87. Which place in India is called "The Golden Mine of Liverworts"?

1. 1. Eastern Himalayas

   
   
   

   2. Western Himalayas

   
   
   

   3. Western Ghats

   
   
   

   4. Eastern Ghats

   
   
   

---

1. View Hint View Answer Discuss in Forum

   Western Himalayas

   Correct Option: B

   Western Himalayas

---

---

88. Two bacteria found to be very useful in genetic engineering experiments are

1. 1. Escherichia and Agrobacterium

   
   
   

   2. Nitrobacter and Azotobacter

   
   
   

   3. Rhizobium and Diplococcus

   
   
   

   4. Nitrosomonas and Klebsiella

   
   
   

---

1. View Hint View Answer Discuss in Forum

   Escherichia and Agrobacterium

   Correct Option: A

   Escherichia and Agrobacterium

---

89. Red snow causing alga is

1. 1. Chamydomonas nivalis

   
   
   

   2. Chlamydomonas reinhardtii

   
   
   

   3. Chlamydomonas debaryanum

   
   
   

   4. Chalmydomonas media

   
   
   

---

1. View Hint View Answer Discuss in Forum

   Chamydomonas nivalis

   Correct Option: A

   Chamydomonas nivalis

---

---

90. Which one of the following is not a chordate ?

1. 1. Starfish

   
   
   

   2. Dolphin

   
   
   

   3. Shark

   
   
   

   4. Snake

   
   
   

---

1. View Hint View Answer Discuss in Forum

   Starfish are echinoderms belonging to the class Asteroidea. All are marine with organ-system level of organization.

   Correct Option: A

   Starfish are echinoderms belonging to the class Asteroidea. All are marine with organ-system level of organization.

---