Botany and Plant Science

Conjunctive parenchyma is the parenchyma which occurs in the root system. It is specially meant for storage of water.

 The stems of seed plants typically have endarch development.

Each microsporangium is lined with a nutritive tissue layer called the tapetum and initially contains diploid pollen mother cells.

 An involucre is a common feature beneath the inflorescences of many Apiaceae, Asteraceae, Dipsacaceae and Polygonaceae.

The dust-like seeds of orchids have no endosperm.

These are made up of parenchymatous cells.

The lotus (Nelumbo nucifera) is officially designated as the national flower of India. It holds cultural and spiritual significance in Indian tradition, representing purity and rebirth, and is frequently depicted in ancient Indian art and mentioned in religious texts.

Rafflesia arnoldii is the largest individual flower in the world, growing up to 1 meter in diameter and weighing up to 11 kilograms. It is a parasitic plant found in Southeast Asian rainforests, particularly in Indonesia. The other options listed are not correct names for the world's largest flower.

Jute fibers are natural fibers obtained from the phloem (inner bark) of the jute plant. The phloem tissue conducts nutrients and provides structural support, making it the source of bast fibers like jute. Xylem transports water and minerals, cambium is a meristem, and epidermal hair is a surface structure.

Amitosis is a direct cell division without spindle formation or chromosome segregation, commonly observed in prokaryotic cells. Eukaryotic cells undergo mitosis or meiosis with proper chromosome segregation. Amitosis is primitive and can result in unequal distribution.

Banana has a spadix inflorescence - a fleshy spike with tiny flowers densely packed around a central axis, typically surrounded by a large bract called spathe. Catkin is a hanging spike, spike is an unbranched elongated cluster, and corymb is a flat-topped inflorescence.

The apophysis is the sterile basal portion of the Pinus microsporophyll (cone scale) that provides structural support to the fertile microsporangia-bearing upper region. Paraphysis are sterile filaments in archegonia, epiphysis is a pineal gland part, and hypophysis is related to embryonic development.

Dichogamy is the temporal separation of sexual maturity in bisexual flowers where stamens and carpels mature at different times, promoting cross-pollination and reducing self-pollination. Self sterility is inability to self-fertilize, dicliny is unisexual flowers, and heteromorphic refers to different forms.

Velamen is a spongy, multiple-layered epidermis found in epiphytic roots (roots of plants growing on other plants, like orchids). It absorbs and retains water from the atmosphere. Breathing roots (pneumatophores) have lenticels, parasitic roots have haustoria, and tuberous roots are for storage, not characterized by velamen.