___________ function as multisensory hydraulic valve?
___________ function as multisensory hydraulic valve?
A. Lenticels
B. Guard cells
C. Hydathods
D. All of these
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In living organisms the lubricant which provides protection against damage resulting from friction is___________?
In living organisms the lubricant which provides protection against damage resulting from friction is___________?
A. Carbohydrates
B. Fatty acid
C. Water
D. ProteinPuccinia is a parasitic___________?
Puccinia is a parasitic___________?
A. Plant
B. Fungus
C. Animal
D. AlgaeHow many vertebrae are present in coccyx?
How many vertebrae are present in coccyx?
A. 7
B. 12
C. 9
D. 4Amoeba can move with the help of?
Amoeba can move with the help of?
A. Flagella
B. Pseudopodia
C. Water
D.Cilia_______ are the first group of invertebrates which have developed a closed circulatory system.
_______ are the first group of invertebrates which have developed a closed circulatory system.
A. Nematods
B. Annelids
C. Arthropods
D. MolluscsWhich of the following is an example of the living member of Psilopsida________________?
Which of the following is an example of the living member of Psilopsida________________?
A. Rhynia
B. Psilophyton
C. Psilotum
D. Cooksonia