Question
Which structures in pteridophytes produce spores by
meiosis?Solution
Sporangia in pteridophytes are structures that produce spores by meiosis. These spores germinate to develop into the photosynthetic thalloid gametophyte.
Pipes 'P' and 'Q' can fill a tank in 36 minutes and 72 minutes respectively. A third pipe 'R' can empty it in 1 hour 48 minutes. 'P' and 'R' are turned ...
Rohit and Karan can complete a work alone in 64 days and 80 days respectively. Working together they earn Rs. 7,200. How much does Karan get?
X, Y and Z can do a piece of work in 90 days, 40 days and 120 days respectively. If they all work together alternatively starting with X, Y than Z respe...
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Anil and Ashish receive Rs.1600 for work of 8 days. If Anil is 3 times efficient than Ashish, then find the daily wage received by Ashish.
‘X’ and ‘Y’ together can finish an assignment in 30 days while ‘Y’ and ‘Z’ together can finish the same assignment in 45 days. ‘X’ a...
The efficiency of X is 50% of the efficiency of Y. If Y can type 180 pages in 45 days, then find the number of days taken by X alone to type 360 pages.
A completes 37.5% of a task in 9 days, B finishes 44.44% of the same task in 8 days, and C accomplishes 66.67% in 8 days. How many days will it take for...
A and B can complete a task together in 16 days, while B alone takes 32 days to finish it. A began working alone and left after ‘x’ days, after whic...
Tanu can complete a task in 'A' days on her own, while together with Manu, they can complete the same task in (A - 6) days. Manu, working alone, can fin...
