A. Jurassic
B. Triassic
C. Cretaceous
D. Tertiary
Pteridophyte
First placental mammals occurred following years ago __________?
A. 13+1 millions
B. 25+1 millions
C. 36+2 millions
D. 63+2 millions
Which of the following makers of geogical time __________?
A. Fossil
B. Plants
C. Animals
D. Insects
Antheridium develop in a cavity is called following __________?
A. Antheridia
B. Antheridium chamber
C. Antheridium house
D. Antheridium bowl
Petridophytes originated from anthocerotae this theory was put forward by following__________?
A. Campbell
B. George
C. Linne
D. Darwin
The siphonostele in which different gaps overlap with eachother is called following __________?
A. Dictysotele
B. Amphiphloic
C. Plectostele
D. Siphonostele
The thin walled parenchyma cells closely associated with the sieve elements are called following ___________?
A. Sieve elements
B. Companion cells
C. Sclerenchyma cells
D. Parenchyma cells
The protoxylem is lying on the periphery of metaxylem following__________?
A. Exarch
B. Mesarch
C. Endarch
D. Sclerenchyma
The xylem produced as result of primary growth are called __________?
A. Primary xylem
B. Secondary xylem
C. Tertiary xylem
D. Phloem
The tracheary elements which are short wide and with perforated end walls are called following__________?
A. Tracheary elements
B. Tracheids
C. Vessel members
D. Primary xylem