Following are the statements about prostomium of earthworm.

(a) It serves as a covering for mouth.

(b) It helps to open cracks in the soil into which it can crawl.

(c) It is one of the sensory structures.

(d) It is the first body segment.

Choose the correct answer from the options given below.

1. (a), (b), (c) and (d) are correct

2. (b) and (c) are correct

3. (a), (b) and (c) are correct

4. (a), (b) and (d) are correct

In cockroach, identify the parts of the foregut in correct sequence:-

1. Mouth $\to$ Oesophagus $\to$ Pharynx $\to$ Crop $\to$ Gizzard

2. Mouth $\to$ Crop $\to$ Pharynx $\to$ Oesophagus $\to$ Gizzard

3. Mouth $\to$ Gizzard $\to$ Crop $\to$ Pharynx $\to$ Oesophagus

4. Mouth $\to$ Pharynx $\to$ Oesophagus $\to$ Crop $\to$ Gizzard

Match the following columns with reference to cockroach and select the correct option :        

                               
1. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
2. (a)-(iv), (b)-(iii), (c)-(v), (d)-(ii)
3. (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
4. (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)

Select the incorrectly matched pair from the following:

1. Chondrocytes - Smooth muscle cells

2. Neurons - Nerve cells

3. Fibroblast - Areolar tissue

4. Osteocytes - Bone cells

Select the correct sequence of organs in the ailmentary canal of cockroach starting from mouth:

1. Pharynx$\to$Oesophagus$\to$Ileum$\to$Crop$\to$Gizzard$\to$Colon$\to$Rectum

2. Pharynx$\to$Oesophagus$\to$Crop$\to$Gizzard$\to$Ileum$\to$Colon$\to$Rectum

3. Pharynx$\to$Oesophagus$\to$Gizzard$\to$Crop$\to$Ileum$\to$Colon$\to$Rectum

4. Pharynx$\to$Oesophagus$\to$Gizzard$\to$Ileum$\to$Crop$\to$Colon$\to$Rectum

Match the following cell structure with its characteristic feature :

a. Tight junctions               (i) Cement neighbouring cells together to form sheet

b. Adhering junctions         (ii) Transmit information through chemicals to another cells

c. Gap junctions                (iii) Establish a barrier to prevent leakage of fluid across epithelial cells

d. Synaptic junctions         (iv) Cytoplasmic channels to facilitate communication between adjacent cells

Select correct option from the following :
1. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
2. (a)-(iv), (b )-(ii), (c)-(i), (d)-(iii)
3. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
4. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

Select the correct route for the passage of sperms in male frogs:
1. Testes → Vasa efferentia → Kidney → Seminal Vesicle→ Urinogenital duct → Cloaca
2. Testes → Vasa efferentia → Bidder's canal → Uretar→ Cloaca
3. Testes → Vasa efferentia → Kidney → Bidder's canal → Urinogenital duct → Cloaca
4. Testes → Bidder's canal→ Kidney→ Vasa efferentia→ Urinogenital duct→ Cloaca

In male cockroaches, sperms are stored in which part of the reproductive system?

1.  Seminal vesicles

2.  Mushroom glands

3.  Testes

4.  Vas deferens

Smooth muscles are

1.  involuntary, fusiform, non-striated

2.  voluntary, multinucleate, cylindrical

3.  involuntary, cylindrical, striated

4.  voluntary, spindle-shaped, uninucleate