STD 11 - 3. Plant kingdom — BIOLOGY STD 11 Science — Question

$(i)$ Some members are saprophytes or parasites while a large number of them are decomposers of litter and help in mineral cycling.

$(ii)$ They reproduce only by asexual spores known as conidia.

$(iii)$ Mycelium is septate and branched.

$(iv)$ Alternaria, Colletotrichum and Trichoderma are examples of this class. Which of the following class of fungi is being described by the above statements?

$I.$ Stretch receptors on the wall of urinary bladder send signal to the $CNS$

$II.$ The bladder fills with urine and becomes distended

$III.$ Micturition

$IV.$ $CNS$ passes on motor messenger to initiate the contraction smooth muscles of bladder and simultaneous relaxation of urethral sphincter

The correct order of steps for urination is

$I.$ Primary and secondary phloem gets crushed during secondary growth

$II.$ During secondary growth, primary xylem remains more or less intact