Options:
- A. Undersecretion of thyroxin
- B. Overproduction of thyroxin
- C. Undersecretion of corticosteroids
- D. Overproduction of corticosteroids
View Answer
B. Overproduction of thyroxin
Biology
Hydra has___________?
Options:
- A. Brain
- B. Nerves
- C. Neuron-cells
- D. All of these
View Answer
C. Neuron-cells
All of the following are coelomates except:____________?
Options:
- A. Deuterosomes
- B. Proterosomes
- C. Hemichordates
- D. Aschelminthes
View Answer
D. Aschelminthes
Venus flower basket is also known as___________?
Options:
- A. Sycon
- B. Euplectella
- C. Leucoselenia
- D. Spongilla
View Answer
B. Euplectella
80% of the food of sponges consists of__________?
Options:
- A. Detrital organic particles
- B. Zooplankton and small animals
- C. Phytoplanktons
- D. all of these
View Answer
A. Detrital organic particles
Excretory system of platyhlminthes consists of___________?
Options:
- A. Nephridia
- B. Flame cells
- C. Malpighian tubules
- D. Nephrons
View Answer
B. Flame cells
Free living example of Platyhelminthes is____________?
Options:
- A. Dugesia
- B. Fasciola
- C. Taenia
- D. None of these
View Answer
A. Dugesia
In term of spore production Selaginella is characterized by________________?
Options:
- A. Homosporous
- B. Hetrosporous
- C. Both depending upon the conditions
- D. None of these
View Answer
B. Hetrosporous
Sporophyte is____________?
Options:
- A. Monoploid
- B. Haploid
- C. Diploid
- D. Polyploidy
View Answer
C. Diploid
Microspore of a seed plant that contain male gametophyte including the gamete is called_______________?
Options:
- A. Pollen grain
- B. Ovule
- C. Microgametophyte
- D. Microsporangium
View Answer
A. Pollen grain