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Biology

General

Easy

Question

In $D r y o p t e r i s comma$ the opening mechanism of sporangium is effectively operated by

Stalk
Stomium
Annulus
None of these

The correct answer is: Stomium

In $D r y o p t e r i s comma$ the mechanism of sporangium opening is effectively operated by stomium, when stomium ruptures the spores are discharged.

Related Questions to study

In $S e l a g i n e l l a$ the adaxial outgrowth from the base of leaf is called

In $S e l a g i n e l l a$ the adaxial outgrowth from the base of leaf is called

Chloroplasts of $S p i r o g y r a$ have

Chloroplasts of $S p i r o g y r a$ have

In the alternation of generations the sporophytic generations is …A… and the gametophytic generation is …B… . Here A and B refer to

In the alternation of generations the sporophytic generations is …A… and the gametophytic generation is …B… . Here A and B refer to

parallel

This place in India is called ‘The Golden Mine of Liverworts’.

This place in India is called ‘The Golden Mine of Liverworts’.

Rhodophytes are commonly called as

Rhodophytes are commonly called as

A bryophyte, which harbours a nitrogen fixing blue-green alga in its thallus, is

A bryophyte, which harbours a nitrogen fixing blue-green alga in its thallus, is

parallel

Which one of the following pairs of plants are not seed producers?

Which one of the following pairs of plants are not seed producers?

A particle of mass $2 cross times 10 to the power of negative 5 end exponent K g$ and charge $4 cross times 10 to the power of negative 3 end exponent C$ moves from rest in a uniform electric field of magnitude $5 blank V divided by m.$ its kinetic energy after 10 seconds is

A particle of mass $2 cross times 10 to the power of negative 5 end exponent K g$ and charge $4 cross times 10 to the power of negative 3 end exponent C$ moves from rest in a uniform electric field of magnitude $5 blank V divided by m.$ its kinetic energy after 10 seconds is

Physics-General

A variable condenser is permanently connected to a $100 blank V$ battery. If the capacity is changed from $blank 2 mu blank F$ to $10 blank mu blank F comma$ then change in energy is equal to

A variable condenser is permanently connected to a $100 blank V$ battery. If the capacity is changed from $blank 2 mu blank F$ to $10 blank mu blank F comma$ then change in energy is equal to

Physics-General

parallel

Two capacitors of $3 p F$ and $6 p F$ are connected in series and a potential difference of $5000 blank V$ is applied across the combination. They are then disconnected and reconnected in parallel. The potential between the plates is

Two capacitors of $3 p F$ and $6 p F$ are connected in series and a potential difference of $5000 blank V$ is applied across the combination. They are then disconnected and reconnected in parallel. The potential between the plates is

Physics-General

In the figure a capacitor is filled with dielectrics. The resultant capacitance is

In the figure a capacitor is filled with dielectrics. The resultant capacitance is
Physics-General

If $f open parentheses x close parentheses equals sin to the power of 6 end exponent invisible function application x plus cos to the power of 6 end exponent invisible function application x comma$ then range of $f open parentheses x close parentheses$ is

If $f open parentheses x close parentheses equals sin to the power of 6 end exponent invisible function application x plus cos to the power of 6 end exponent invisible function application x comma$ then range of $f open parentheses x close parentheses$ is

parallel

The equation $sin to the power of 2 end exponent invisible function application theta minus fraction numerator 4 over denominator sin to the power of 3 end exponent invisible function application theta minus 1 end fraction equals 1 minus fraction numerator 4 over denominator sin to the power of 3 end exponent invisible function application theta minus 1 end fraction$ has

The equation $sin to the power of 2 end exponent invisible function application theta minus fraction numerator 4 over denominator sin to the power of 3 end exponent invisible function application theta minus 1 end fraction equals 1 minus fraction numerator 4 over denominator sin to the power of 3 end exponent invisible function application theta minus 1 end fraction$ has

In $increment A B C comma$ the median $A D$ divides $angle B A C$ such that $angle B A D colon angle C A D equals 2 colon 1.$ Then $cos invisible function application left parenthesis A divided by 3 right parenthesis blank$ is equal to

In $increment A B C comma$ the median $A D$ divides $angle B A C$ such that $angle B A D colon angle C A D equals 2 colon 1.$ Then $cos invisible function application left parenthesis A divided by 3 right parenthesis blank$ is equal to

The number of values of $y blank$ in $blank open square brackets negative 2 pi comma blank 2 pi close square brackets$ satisfying the equation $open vertical bar sin invisible function application 2 x close vertical bar plus open vertical bar cos invisible function application 2 x close vertical bar equals open vertical bar sin invisible function application y close vertical bar$ is

The number of values of $y blank$ in $blank open square brackets negative 2 pi comma blank 2 pi close square brackets$ satisfying the equation $open vertical bar sin invisible function application 2 x close vertical bar plus open vertical bar cos invisible function application 2 x close vertical bar equals open vertical bar sin invisible function application y close vertical bar$ is

parallel

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