491. Fruits donot form in gymnosperms because

A Seeds are not formed
B Ovules are naked
C Fertilization absent
D Seeds are fall down in little stage
Answer :   Ovules are naked
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492. Which of the following is a flowering plant with nucleus containing filamentous nitrogen-fixing microorganism

A Cicer arietinum
B Casuarine equisetifolia
C Crotalaria juncea
D Cyacas revoluta
Answer :   Casuarine equisetifolia
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493. Embryophyta include

A Algae
B Fungi
C Bryophyta
D All of the above
Answer :   Bryophyta
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494. Biosystematics aims at

A identification and arrangement of organisms on the basis of their cytological characteristics
B the classification of organisms based on broad morphological characters
C delimiting various taxa of organisms and establishing their relationships
D the classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies
Answer :   the classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies
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495. According to Bessey the tree habit is a

A Advance character
B Primitive character
C Degenerate character
D Any of the above
Answer :   Primitive character
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496. The bacterial genome contains

A DNA and histone
B DNA or histone
C DNA without histone
D Neither DNA nor histone
Answer :   DNA without histone
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497. Which one of the following is also algae

A Cyanobacteria
B Rhodospirillum
C Green bacteria
D Purple bacteria
Answer :   Cyanobacteria
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498. Position of microsporangia of Cycas on microsporophyll is

A Marginal
B Adaxial
C Abaxial
D Lateral
Answer :   Abaxial
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499. Which aquatic Ferm performs nitrogen fixation

A Azolla
B Nostoc
C Salvia
D Salvinia
Answer :   Azolla
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500. Pangenesis hypothesis was proposed by

A Weismann
B Gelton
C Wagner
D Darwin
Answer :   Darwin
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