.

2021-08-03 11:30:07 Male Reproductive System

1. The elastic tissue which connects the cauda epididymis to the scrotal sac is
(a) Caput epididymis
(b) Scrotal ligament
(c) Gubernaculum
(d) Tendinous cord

2. By the contraction of the spermatic cord, the testis of man are not taken to the abdominal cavity due to this structure
(a) fat bodies and gubernaculum present over the testis
(b) attachment of testis by gubernaculum to the scrotal sac only
(c) narrowness of inguinal canal
(d) both (b) and (c)


3. The seminiferous tubules of the testis are lined by the germinal epithelium consisting of
(a) spermatids
(b) cells of Sertoli
(c) spermatogonium
(d) spermatocytes


4. These cells of the testes secrete testosterone
(a) Sertoli cells
(b) cells of germinal epithelium
(c) Cells of Leydig or interstitial cells
(d) secondary spermatocytes


5. There is a connective tissue cord extending between the testis and abdominal wall known as
(a) mesenteric cord
(b) gubernaculum
(c) testis cord
(d) spermatic cord


6. Which of these is an accessory reproductive gland in male mammals
(a) Inguinal gland
(b) Prostate gland
(c) Mushroom-shaped gland
(d) Gastric gland


7. There are some special types of cells present in the seminiferous tubules known as Sertoli cells which are
(a) somatic cells
(b) germinal cells
(c) protective cells
(d) reproductive cells


8. Seminiferous tubules develop central lumen after
(a) Old age
(b) Prepuberal time
(c) Birth
(d) Puberty


9. Another name for Bulbourethral gland is
(a) Meibomian gland
(b) Prostate gland
(c) Perineal gland
(d) Cowper’s gland


10. In man, Cryptorchidism is the condition when
(a) testes do not descent into the scrotum
(b) there are two testes in each scrotum
(c) testis degenerates in the scrotum
(d) testis enlarges in the scrotum Open / Comment

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2021-08-02 08:38:04 Shapes in NCERT BIOLOGY
NEET TIPS AND TRICKS
1. Pollen grains are generally : Spherical
2. Nucleous : Spherical
3. Centriole: Cylindrical
4. Mitochondrial: Sausage shaped or cylindrical
5. RBCs: Round and biconcave
6.Mesophyll cell: Round and oval
7.Trachied : Elongated
8. Columnar epithelium : Long and narrow
9. WBSs : Amoeboid
10. Nerve cell(longest cell) : long and branched
11. Henle's loop : Hairpin bend
12. Stomach : J-shaped
13. Spleen and kidney : Bean shaped
14. Thymus : Lobed organ
15. Patella : cup shaped
16. Bowman's capsule : Double walled cup like structure
17. Heart : Clenched fist (size)
18. Oxygen dissociation curve : Sigmoid Open / Comment

2021-07-30 14:51:00 BORON:
•In casting of copper as a dioxidizer
•Boron rods used in automic reactor.
•Boron fiber used in bullet proof jacket,
•In composite material of aircraft
•Used in braintumer therapy.

BORAX:
•As a flux for soldring metal.
•In borex bead test
•In softning of water
•Antiseptic
•Manufacturing of enamels of glazes, tiles.
•For making optical and borosilicals SS.
•Food preservative

ALUMINIUM:
• Making house hold, untensils, frames, roof,aircrafts.
• Electric wire.
•Thermite process (In metallurgy of Cr, Mn, Fe)
•For transportin nitric acid.
•AI, Hg used as reducing agent.
•Aluminium powder + Ammonium nitrate.

LEAD [Pb]:
•In making telegraph and telephone wires
•Making bullets
•Making chamber in HSO, process.

NITROGEN:
•In the manufacturing of HNO3, NH3, CaCN2.
•Liquid nitrogen used as refrigrant.
•Inert atmosphere in metallurgy.
•Gas thermometer and electrical bulb

NH3:
• Refrigeration
•Manufacturing HNO3, NaHCO3
•Artificial Silk.
• Urea Formation
•For solvent

HNO3:
• Manufacturing of ammonium nitrateas fertilizer.
•In explosive
• For making nitroglycerine.
• Making TNT.
• Pickling against of stainless steel.
• Etching of Metal
•Oxidizer in rocket fule. Open / Comment

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2021-07-25 06:18:43 How to give the final shape to the NEET 2021 Preparation :

Firstly, eliminate the stress, release the pressure. Don’t let the pressure of the exam period affect your performance. Lean on a practical approach and focus on winning. Here is a step to step guide that will help you make the most out of this time.

1. Map your class notes with NCERT
Class notes play a very important role; as they are handwritten, they tend to remain in your memory. Now is the time to recall and restore all your self-made notes. Remember, whichever topic you are revising, always pull out your self-made class notes for the ultimate learning. The self-made notes have the magic to bring you in term with even the most complex concept.

While studying, keep on mapping your topic and subtopics from the NCERT and self-made notes. Underline, Highlight. Within one week, you will see that you have developed a speed.

2. Chapter wise PYQs in the sequence of Bock Strategy
Past 20 years PYQ (Previous Years’ Questions) are only necessary; there is no need to go further back in the date. Do not deviate from that; focus on these questions only, along with the continuous mapping. This way, you will start gaining more confidence in basic topics and even complex topics. Try converting your time spent in taking pressure and use that energy to increase productivity.

3. AD Revision Plan
AD stands for alternate days. It would be best if you formed a revision plan based on the alternate day strategy. If you are revising Physics, Biology (Botany) on Monday, you should revise Chemistry and Biology (Zoology), and the cycle continues.

Note: you should fix the time for revision at two hours before sleeping, and you must revise based on the AD Plan. It would be best if you planned to revise what you had studied in the week/prior week. Remember, immediate revision gives the best result—Reattempt the PYQs as a part of the revision plan.

This way, you will be using the 30 days very productively and effectively. These 30 days will boost and align your energy very immensely.

All the best!! Open / Comment

2021-07-15 14:00:42 Important Points of The Chapter “Reproduction in Organisms”

Parthenogenesis: Development of an egg into an embryo without fertilisation.
E.g. Rotifers, honeybees, turkey and some lizards.

Meiocytes are specialised cells of diploid organisms which undergo meiosis to produce gametes.

Monoecious Plants: Plants having both male and females flowers on same individual. E.g. Cucurbits and coconut.

Dioecious Plants: Plants having male and female flowers on separate individuals. E.g. Papaya and date palm.

Bamboo species flower only once in their life time generally after 50-100 yr.

Strobilanthus kunthiana: Flowers once in 12 years. (Kerarala, Karnataka and Tamil Nadu) Open / Comment

2021-07-13 09:16:28 𝐀𝐋𝐋 𝐏𝐈𝐓𝐔𝐈𝐓𝐀𝐑𝐘 𝐆𝐋𝐀𝐍𝐃 𝐇𝐎𝐑𝐌𝐎𝐍𝐄𝐒 𝐓𝐎𝐆𝐄𝐓𝐇𝐄𝐑:

𝙏𝙍𝙄𝘾𝙆:- “𝐆𝐎𝐀𝐓 𝐅𝐋𝐀𝐏”

𝐄𝐱𝐩𝐥𝐚𝐧𝐚𝐭𝐢𝐨𝐧

i) 𝐆𝐇,

ii) 𝐎𝐗𝐘𝐓𝐎𝐂𝐈𝐍,

iii) 𝐀𝐂𝐓𝐇,

iv) 𝐓𝐒𝐇,

v) 𝐅𝐒𝐇,

vi) 𝐋𝐇,

vii 𝐀𝐃𝐇,

viii) 𝐏𝐑𝐎𝐋𝐀𝐂𝐓𝐈𝐍. Open / Comment

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