Juvenile hormone in insect is released from
protocerebrum
corpora cardiaca
corpora allata
thoracic gland
C.
corpora allata
Juvenile hormones are a group of a cyclic sesquiterprenoids which tend to regulate many aspects of insect physiology, i.e., they regulate development, reproduction diapause and polyphenisms in them. They are secreted by a pair of endocrine glands behind the brain called corpora allata. These hormones are also important for the production of eggs in female insects.
The epithelium found in the inner linings of stomach and intestine is
columnar
squamous
stratified
pseudostratified
Which one of the following statements is incorrect?
Insects have one pair of antenna
Millipeds possess two pairs of appendages in each segment of the body
Prawns have two pairs of antenna
Animals belonging to the phylum- Porifera have nematocys
Study the following statements with reference to nervous system in Periplanata.
I. The brain is mainly a sensory and an endocrine centre.
II. All thoracic ganglia supply nerves to the parts of their respective segments only.
III. Sixth abdominal ganglion is the largest of all the abdominal ganglia.
IV. Frontal ganglion is connected to the ingluvial ganglion by a recurrent nerve.
From the above identify the correct statements
II and IV
II and III
I and III
I and IV
In the female cockroach the anterior wall, roof and floor of genital pouch are formed respectively by the following abdominal sterna of
7th , 8th and 9th segments
8th , 7th and 9th segments
9th , 8th and 7th segments
8th , 9th and 7th segments
Select the organs/parts which are derivatives of Mesoderm.
I. Nervous system (except mecroglia)
II. Heart, blood vessels
III. Spleen
IV. Kidney, ureters
V. Epithelium of larynx, trachea, bronchi and lungs
VI. Legaments, tendons and skin dermis
II, III, IV and VI
I and V
I, II and IV
III, VI and VI
Plantula is a soft adhesive pad that helps cockroach in grasping the substratum firmly on which leg podomere does it occurs?
Tarsus
Trochanter
Femur
Coxa
From the following pairs regarding the type of animal tissue with its location. Choose the incorrect ones.
Pseudo stratified epithelium - Eustachian tube
Keratinized stratified epithelium - Conjunctiva of eyes
Squamous epithelium - Alveoli of lungs
Cuboidal epithelium - Pancreatic ducts
Match the Column I and Column II
| Column I | Column II |
| A. Squamous | 1. Intestinal glands |
| B. Cuboidal | 2. Trachea |
| C. Columnar | 3. Ovary |
| D. Ciliated |
4. Blood vessels 5. Bronchioles |
A - 2; B - 5; C - 1; D - 3
A - 4; B - 3; C - 1; D - 2
A - 4; B - 3; C - 1; D - 5
A - 4; B - 5; C - 1; D - 2
