1541. At sources, how are sugars transported into the phloem?

A. Passive diffusion
B. Down a water potential gradient
C. Active transport *
D. Through the xylem

1542. Microspores give rise to which structures ?

A. Sporophytes
B. Ovaries
C. Male gametophytes *
D. Tubers

1543. Which of the following processes produces clones ?

A. Vegetative propagation *
B. Gravitotropism
C. Fertilization
D. Heterospory

1544. Which kind of plant movement is quickly reversible ?

A. Gravitotropism
B. Turgor movement *
C. Thigmotropism
D. Root pressure

1545. Which of the following does not pass in or out of the stomata ?

A. Carbon dioxide
B. Oxygen
C. Light *
D. Water vapor

1546. The name frond is given to the leaves of members of one of the class :

A. Gymnosperm
B. Feliciana *
C. Angiosperm
D. None of these

1547. Which of the following plants contains a sporangium capsule made up of stomium and annulus :

A. Selaginella
B. Equisetum
C. Marisela
D. Adiatum *

1548. Of the following , Which one is most advanced ?

A. Anthoceropsida *
B. Bryopsida
C. Hepaticopsida
D. None of these

1549. In hornworts, the band of mersitaematic tissue is found near :

A. Foot
B. Gamete producing region
C. Spore producing region
D. At junction of A and C *

1550. The part of sporophyte which is called sporangium is :

A. Capsule *
B. Foot
C. Stalk
D. None of these