1-A,2-d i tnk

larri: 1.b 2.b

1-A,2-D

Simplefemo: The F1 of a cross a tall and a dwarf plan was tall. The F1 was advanced to F2.
How many of 120F2 plant will be dwarf?
A. 30 B. 60 C. 90 D. 120

2. From which group of animals are mammals generally believed to have most recently evolved?
A. Reptile b. fishes c. amphibians d. birds

Itz A

larri: Answer is d

Itz B,x^hy z suffer male while x^hx^h z female sufferer.x^hx z female carrier.so nw croz breed x^hx^h with x^hy to get da desired ratio.thks u tried

larri: Answer is (c)1/2 and 1/2

[quote author=Simplefemo]The F1 of a cross a tall and a dwarf plan was tall. The F1 was advanced to F2.
How many of 120F2 plant will be dwarf?
A. 30 B. 60 C. 90 D. 120

2. From which group of animals are mammals generally 1 A 2B

Simplefemo: The F1 of a cross a tall and a dwarf plan was tall. The F1 was advanced to F2.
How many of 120F2 plant will be dwarf?
A. 30 B. 60 C. 90 D. 120

2. From which group of animals are mammals generally believed to have most recently evolved?
A. Reptile b. fishes c. amphibians d. birds

1. A (a cross between tall plant [TT] and dwarf plant [tt] will produce Tt, Tt, Tt, Tt in the 1st filial generation, if F1 is advanced to F2, Tt and Tt will result in plants with the following gene composition: TT,Tt, Tt, tt in the 2nd filial generation. 1 is dwarf out of 4, hence 30 will be dwarf in 120F2 generation.
2. B -oviparity- ovoviviparity- viviparity (as in bird to guppy (a fish) to mammal).

Simplefemo: Exponential increase in the population of an organism is a characteristic feature of
a. binary fission
b. sexual reproduction
c. budding
d. vegetative propagation

2. A fundamental similarity between nervous and hormonal system is that both
a. involve chemical transmission
b.have widespread effects
c.shed chemicals intothe blood stream
d.evoke rapid responses.

3. 5g of oven dried soil was heated in a furnace for 24 hours. After cooling, it weighed 4.8g. What is the amount of humus in the soil
a. 40.0g per 100g dry soil
b. 4.4g per 100g dry soil
c. 4.0g per 100g dry soil
d. 0.4g per 100g dry soil.

4. During cell division, the two strands of chromosomes are joined at a point called
a. Spindle
b. Chromatid
c. Centromere
d. Aster

1.A
2.A
3.C.
4.C

for your free online practice log onto http://passjamb.com.ng

Bond008:
1/f=1/u+1/1/u
1/f=1/4+1/25
1/f=25+4/100 =29/100
f=100/29
f=3.44cm (a)

put -25 cuz itz virtual enlargd image,anza z B

Lng tym evrybdy,my phne wz faulty bt rectified nw.ao readn stuff?

Simplefemo:
1. A (a cross between tall plant [TT] and dwarf plant [tt] will produce Tt, Tt, Tt, Tt in the 1st filial generation, if F1 is advanced to F2, Tt and Tt will result in plants with the following gene composition: TT,Tt, Tt, tt in the 2nd filial generation. 1 is dwarf out of 4, hence 30 will be dwarf in 120F2 generation.
2. B -oviparity- ovoviparity- viviparity (as in bird to guppy (a fish) to mammal).

hmm,i thnk ovoviviparity z found amng reptilez

buzyguy: put -25 cuz itz virtual enlargd image,anza z B

oops.. thanks

Yeah,u av 4gottn.lolz

Bond008:
oops.. thanks

buzyguy: hmm,i thnk ovoviviparity z found amng reptilez

sure, check 1995 ume, question 50 (Biology)
positive criticism can not be ruled out.

Do u bliev seriez sumtymz mak mistakez?dou am nt critisizing anywy!

Simplefemo:
sure, check 1995 ume, question 50 (Biology)
positive criticism can not be ruled out.

Attempt this:

The magnification of an object tall when placed 10cm in front of plane mirror is

Mag.=v/u,v z sam with u in distance from da mirror.so 10cm/10cm=1 no unit.i lyk dat level don chang we r nw on level ten over ten.lolz!

ANDREW2EIC: Attempt this:

The magnification of an object tall when placed 10cm in front of plane mirror is

buzyguy: Mag.=v/u,v z sam with u in distance from da mirror.so 10cm/10cm=1 no unit.i lyk dat level don chang we r nw on level ten over ten.lolz!

Bravo for ur good reasoning. You know, after solving the question the first time, i just told myself "wow! Jamb could be so tricky sometimes".

I think why some students fail exams thesedays is dawn to lack of composure in exam hall, rather than ignorance.
I keep asking God for this wonderful virtue called composure together with serenity. With them, i know i will keep blasting exams after exams.

Hmm,u r vry rite.no wahala jamb z already in wahala ijn.we r all gonna mak it big!

ANDREW2EIC:

Bravo for ur good reasoning. You know, after solving the question the first time, i just told myself "wow! Jamb could be so tricky sometimes".

I think why some students fail exams thesedays is dawn to lack of composure in exam hall, rather than ignorance.
I keep asking God for this wonderful virtue called composure together with serenity. With them, i know i will keep blasting exams after exams.

buzyguy: Yeah,u av 4gottn.lolz

ya. i wont forget next time. thanks once again.

buzyguy: Hmm,u r vry rite.no wahala jamb z already in wahala ijn.we r all gonna mak it big!

AMENN OO. I RECIEVE IT IN JESUS NAME PASTOR. -

buzyguy: Hmm,u r vry rite.no wahala jamb z already in wahala ijn.we r all gonna mak it big!

Amen o. We are gonna hammer wella

A particle in a straight line specified by the equation y=4t^4 - 3t^3.find the acceleration after 3 seconds.

1)Which of there undergoes condensation reaction
a)alkanol
b)amine
c)alkanal
d)haloalkane
2)which of the following react with NaOH to give double salts?
a)S02
b)S03
c)P04
d)N02

t.boy007:

2)which of the following react with NaOH to give double salts?
a)S02
b)S03
c)P04
d)N02

d)NO2,. This is because it is a mixed acid anhydride.

t.boy007:
A particle in a straight line specified by the equation y=4t^4 - 3t^3.find the acceleration after 3 seconds.

Velocity(v) of the particle = dy/dt = 4x4xt^3 - 3x3xt^2, v = 16t^3 - 9t^2.
Acceleration(a) of the particle = dv/dt = 16x3xt^2 - 9x2xt, a = 48t^2 - 18t., but t = 3seconds, hence:
a = 48(3^2) - 18x3, a = 48x9 - 18x3, a = 432 - 54, a = 378m/s

therefore the acceleration of the particle is 378m/s.
My 2cent on the question.

t.boy007:
1)Which of there undergoes condensation reaction
a)alkanol
b)amine
c)alkanal
d)haloalkane

Am biased towards option a) cos when they react with carboxylic or alkanoic acids they give out water. Is that correct?

buzyguy: Do u bliev seriez sumtymz mak mistakez?dou am nt critisizing anywy!

Yes, as regard the question, i've checked four different series (series published by four different authors) they picked fish.

t.boy007:
1)Which of there undergoes condensation reaction
a)alkanol
b)amine
c)alkanal
d)haloalkane
2)which of the following react with NaOH to give double salts?
a)S02
b)S03
c)P04
d)N02

1. A- In esterification reaction, acid and alkanols condenses to give a dimer with the elimination of water molecule.
2. D- Reaction between NO2 and NAOH will form NANO3 and NANO2

Attempt this:

An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is 15cm, what is the object distance?

Attempt this:

A certain far-sighted person cannot see objects that are closer to the eye than 50cm clearly. Determine the power of the converging lens which will enable him to see at 25cm.

ANDREW2EIC: Attempt this:

An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is 15cm, what is the object distance?

v=3u
1/3u+ 1/u=1/15
1+3/3u=1/15
60=3u
u=20cm
object distance, u= 20cm