CBSE Questions for Class 9 Biology Diversity In Living Organisms Quiz 10 - MCQExams.com

The basic insect respiratory system consists of a series of rigid tubes, called tracheae (singular trachea), connected to the outside via pairs of pores called spiracles (typically one pair per segment on the sides of the thorax and abdomen, lacking on certain segments). Air enters the system via the spiracles and the tracheae are air-filled. The spiracles can often be opened and closed and lead into short tracheae that enter a pair of longitudinal tracheal trunks, which are the main tracheal tubes. Silkworm is also belongs to the class insect. So, the correct answer is ‘Tracheae’.

• The true koels are also called as Eudynamus belonging to a genus of cuckoos from Asia, Australia and Pacific.
• They are large sexually dimorphic cuckoos which eat fruits and insects. They are brood parasites, laying their eggs in the nests of other species.
• In Eudynamis male is black while the female is white spotted brown.
  
• So, the correct answer is 'Male is black while the female is white spotted brown'.

A.  The pollen basket or corbicula (plural corbiculae) is part of the tibia on the hind legs of certain species of bees. They use the structure in harvesting pollen and carrying it to the nest or hive. Other species of bees have scope instead.

B. Flies with fused labella have food channels on the surface of the labella. These are called pseudotracheae.

C. The bleached lac is melted by heating on the charcoal fire and moulded into rods, flakes or sheets. It is then marketed as shellac.

D. Dutton describes a fine membrane covering in the area between mosquito extended tongue and the base of the lamellae. 

E. Well developed Galen present in the butterfly.

 So, the correct answer is 'a-v,b-iv,c-ii,d-iii,e-i'

Periplaneta is the scientific name of cockroach. It belongs to the class Insecta of phylum Arthropoda. Arthropods are characterized by their jointed appendages and cuticle made of chitin.

So, the correct answer is 'Arthropoda'.

1.  Digitigrade are those animals who walk on their digits and toes. For example, elephant.
   
2.  Unguligrade means they put their tips of digit on the ground and walk. example cow, deer, horse etc.
3. Plantigrade walks with the soles of their feet on the ground. For example, primates.
   

1. Bear is plantigrade that walks with the soles of their feet on the ground.
2. Elephants are digitigrade as they walks on their digits and toes.
3. Cow and deer are unguligrade means they put their tips of digit on the ground and walk. 

Squirrels are small rodents found all over the world. They are basically of three types- tree squirrels, flying squirrels and ground squirrels. Out of these three, flying squirrels are considered arboreal rodents.

So, the correct answer is 'Squirrel'.

Guinea pigs are rodents that are domesticated household pets. They have the ability to learn complex learned paths for a long time. They are extensively used in researches as model organisms. They normally have four digits on their forelimbs as the thumb is absent and three digits on their hind limbs as digits I and V are absent.   

So, the correct answer is '4 and 3'.

Birds have pneumatic bones. Pneumatic bones are basically long hollow bones that have air inside of them. These bones are interconnected via passages and are a characteristic feature of avians. They aid birds by reducing their weight which ultimately works in their favor while flying

So, the correct answer is 'Aves'