Juvenile and adult plants are

The development of the structure and shape of an organism is known as:

Differentiation of various tissues and organs in response to light is called

Assertion: Senescence is the time when age-associated defects are manifested.
Reason: Certain genes may be undergoing sequential switching on and off during one's life.

Suitable environmental conditions for seed germination are

Go through the following pairs and choose the correct pairs from the options given below:

$I$. Nerium	Sunken stomata	Lower epidermis of leaves to reduce loss of water
$II$. Calotropis	Non-succulent	Root cells with thickened cell walls
$III$. Peperomia	Leaf succulent	Leaf epidermal cell,store water
$IV$. Ammophila	Dicot	Curl their leaves to minimise loss of water
$V$. Tribulus	Ephemeral	Water is stored in stem