Secondary xylem and phloem in dicot stem are produced by
Apical meristems
Vascular cambium
Axillary meristems
Phellogen
B.
Vascular cambium
Vascular cambium is partially secondary.
Form secondary xylem towards its inside and secondary phloem towards outsides.
4 – 10 times more secondary xylem is produced than secondary phloem.
Select the wrong statement :
Cell wall is present in members of Fungi and Plantae
Mushrooms belong to Basidiomycetes
Mitochondria are the powerhouse of the cell in all kingdoms except Monera
Pseudopodia are locomotory and feeding structures in Sporozoans
The difference between spermiogenesis and spermiation is
In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.
In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed.
In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules.
In spermiogenesis spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.
After karyogamy followed by meiosis, spores are produced exogenously in
Neurospora
Alternaria
Saccharomyces
Agaricus
Which one is wrongly matched?
Uniflagellate gametes – Polysiphonia
Biflagellate zoospores – Brown algae
Unicellular organism – Chlorella
Gemma cups – Marchantia
Pneumatophores occur in
Halophytes
Free-floating hydrophytes
Submerged hydrophytes
Carnivorous plants