The collenchyma is a simple permanent tissue, which provides mechanical support

Fasciola (liver fluke) is an acoelomate, i.e.,without coelom or body cavity.

Gametophyte is a free - living, small thalloid structure called prothallus. In most ferns, the prothallus is green and autotrophic.

Systematics refers to study of diversity of kinds of organisms and their relationship.

(i) Macrophages.
(ii) Ciliated epithelium of trachea.

It ranges from 4.5-8.2, average pH is 6.0

The representation of a standard ECG diagram 

Cigarette smoking causes damages to the alveolar walls and reduces elasticity of the lungs, which leads to decreased respiratory surface for exchange of gases.Thus, causing emphysema.

Yes,unicellular organisms also grow. Their cell size increases upto a certain fixed dimension only and then they divide. Their growth and reproduction is synchrosed. i.e. it goes hand in hand.

Succulents (water-storing) plants such as cacti, fix CO₂ into organic compound (malic acid) using PEP carboxylase at night when the stomata are open.

Neurotransmitters are the chemicals which are present at sybnaptic junctions.

Calculation of number of mitosis
Mitosis of one cell produces 2 cells. Similarly, 2 cells undergoing mitosis give rise to 4 cells and so on.
This can be generalised as:
2ⁿ = number of daughter cells, where n = number of cycles of mitotic cell division.
Since the tissue has 1024 cells
⇒ 1024 = 210 cycles
Hence, the original parental single cell has undergone 10 cycles of mitosis to give rise to 1024 cells.
Ten cycles of mitosis.

'S' or Svedberg unit, refers to the sedimentation coefficient.

(i) Gap Junction 
(ii) Tight Junction
(iii) Adhering Junction

Cuticle It is waxy coating covering the entire plant body surface. It is absent in roots, it prevents the loss of water through the surface of the plant body.

They obtain oxygen by pneumatophores, from dissolved part in water and intercellular diffusion from aerial parts.

(i) Pneumatic bones are light but strong, this feature helps birds in flight
(ii) Air sacs increase the efficiency of respiration and provide buoyancy to the animal

Placoid scales - Scoliodon (dog fish)
Cycloid scales - Labeo ( rohu)

Rhizoids: Bryophytes have rhizoids that have a root-like structure that helps in absorption of water and anchors the plant.

In the five-kingdom classification system given by Whittaker, four kingdoms belong to eukaryotes, i.e., Protista, Fungi, Plantae, and Animalia. Only kingdom Monera belongs to prokaryotes.

Chemosynthetic bacteria are autotrophs because they are able to synthesise their food from inorganic raw material with the help of energy obtained from chemical reaction.

Largest botanical garden in the world is Royal Botanical Garden, Kew (London).
Some well-known botanical gardens in India are
(i) National Botanical Garden, Lucknow
(ii) Lloyed Botanical Garden, Darjeeling
(iii) Indian Botanical Garden, Sibpur, Kolkata