Which of the following statements about Pteridophytes is true?
The homosporous forms are precursors to the seed habit
Gametophyte is the dominant plant body
First terrestrial plants to possess vascular tissues
Equisetum is a member of pteropsida
Equisetum is a member of pteropsida
C.
First terrestrial plants to possess vascular tissues
Among all the given statements, statement III is correct. Rest can be corrected as:
A - The heterosporous forms are precursors to the seed habit.
B - Sporophyte is the dominant plant body.
D - Equisetum is a member of Sphenopsida.
E - Prothallus are the spores that germinate to give rise to inconspicuous, small but multicellular free living, mostly photosynthetic thalloid gametophytes.
The modified supporting roots called prop roots and stilt roots are seen respectively in
(i) Banyan and maize
(ii) Banyan and sugarcane
(iii) maize and banyan
(iv) Sugarcane and maize
(i) only
(ii) only
(ii) only
(i) and (ii) only
(i) and (ii) only
Consider the following statements with respect to fungi
(a) They show a great diversity in morphology and habitat
(b) The white spots seen on mustard leaves are due to a saprophytic fungus
(c) They prefer to grow in cold and humid places
(d) The cell walls of fungi are composed of chitin and polysaccharides
Of the above statements-
(a) and (b) are correct
(a) and (d) are correct
(a) and (c) are correct
(b) and (d) are correct
(b) and (d) are correct
Which one of the following is not a characteristic feature of Fabaceae?
Fruit is a berry
Sepals five, gamosepalous and imbricate aestivation
Stamens ten
Ovary superior, monocarpellary and unilocular with many ovules
Ovary superior, monocarpellary and unilocular with many ovules
Which of these plants has pinnately compound leaf at a node?
Alstonia
Calotropis
Guava
Mustard
Mustard
The mango fruit is a drupe type in which are mesocarp is
Fibrous
Stony hard
Thin and fleshy
Fleshy and edible
Fleshy and edible
Which of the following meristems are lateral meristems ?
Apical meristem, interfacsicular cambium and cork cambium
Fascicular vascular cambium, interfacsicular cambium and cork cambium
Apical mertistem, intercalary meristem and cork cambium
Intercalary meristem, interfacsicular cambium and cork cambium
Intercalary meristem, interfacsicular cambium and cork cambium
Pick out the correct statement
Spring wood is otherwise called late wood
Autumn wood is otherwise called early wood
In old trees, the heart wood is involved in the conduction of water
In old trees, the sap wood does not conduct water
In old trees, the sap wood does not conduct water
Which among these statements about collenchymas is true?
Collenchyma cells are usually dead without protoplasts
The cells are long and narrow with thick lignified walls
Collenchyma occurs in layers below the epidermis in dicotyledonous plants
These cells are found in the pulp of fruits like guava, pear and sapota
These cells are found in the pulp of fruits like guava, pear and sapota
Slime layer and capsule in bacteria are modifications of the
Glycocalyx
Cell wall
Plasma membrane
Pellicle
Pellicle
