Microlecithal eggs are present in
Insects
Aves
Fishes
Mammals
D.
Mammals
Microlecithal eggs are found in mammals and these are small sized egg with very small amount of yolk.
Respiration pigment of blood in cockroach is
haemozoin
haemocyanin
haemoglobin
absent
D.
absent
Hemolymph is colourless because there are no blood cells or respiratory pigment. The cockroaches lack respiratory pigment.
Hemocyanin is a protein which carries the oxygen in the arthropods.
Haemozoin is a disposal product formed from the digestion of blood by some blood- feeding parasites.
Haemoglobin is a red protein responsible for transporting oxygen in the blood of vertebrates.
Lampbrush chromosomes are present in
Drosophilla
Ascaris
Hydra
None of these
D.
None of these
Lampbrush chromosomes are found in the vertebrate oocytes particularly rich in yolk. They are extremely large and brush like in appearence.
Jaws present in which of the following?
Herdmania
Fishes
Petromyzon
Amphioxus
B.
Fishes
Jaws are present in fishes, for eg, Gnathostoma.
Golgi body is
organ for protein synthesis
secretory organ
Both (a) and (b)
None of the above
B.
secretory organ
Golgi bodies are secretory organ of the cell. In golgi apparatus, protein glycosylation takes place.
Comb jelly is member of phylum
Mollusca
Echinodermata
Coelenterata
Ctenophora
D.
Ctenophora
Comb jelly belongs to Phylum - Ctenophora. It comprise a phylum of invertebrate animals that live in marine waters. They are the largest animals to swim with the help of cilia.
Which tissue covered with calcium phosphate?
Bone
Muscles
Mesenchyma
Cartilage
A.
Bone
Bones are covered with calcium phosphate, which provide strength and hardness to them.
Respiration in Ascaris is
aerobic respiration
anaerobic respiration
Both (a) and (b)
None of the above
C.
Both (a) and (b)
Respiration in Ascaris is both anaerobic and aerobic. It occurs in different conditions.
In the process of anaerobic respiration, glycogen undergoes glycolysis to yield carbon dioxide, fatty acids and energy. The main fatty acids which are produced include valerianic butyric and caproic acids. These are excreted through cuticle and these impart a characteristic smell like that of a canned pineapple.
Which of the following is not insect?
Spider
Grasshopper
Fly
Bee
A.
Spider
Spider belongs to Class- Arachanida. It has 4 pairs of leg and their body is divisible into cephalothorax and abdomen.
Grasshoppers belong to Sub- order Caelifera. They have powerful hind legs which allow them to escape from threats.
Flies belong to Order- Diptera. They have a pair of functional wings for flight and a pair of vestigial hindwings for balance.
Bees are flying insects. They have their role in pollination.
In Amoeba hyaline cap is formed by
around the food vacuole
around the contractile vacuole
around the nucleus
on pseudopodia
B.
around the contractile vacuole
In Amoeba lobose type of pseudopodia with hyaline caps are present.