₦airaland Forum

Vitamin17:
C is correct....

explain why it's C?

Heartlessbanker:
b

okay boss....pls explain

Vitamin17:
A should be the answer am not sure o because Morgan used it to study chromosomes in the laboratory that drosophila is a fruitfly I have forgotten sha

u're right bro


Which of the following with respect to a body performing simple harmonic motion are in phase?

A. displacement and velocity of the body

B. displacement and force on the body

C. velocity and acceleration of the body

D. force acting on the body and the acceleration

An organism that has been extensively used to test the chromosomes theory of heredity is

A. Drosophila melanogaster

B. Muscar domestica

C. Zea mays

D. Homo sapiens

Vitamin17:
The basic function of the microscope is magnification so the answer is D...

nice attempt bro... what's the difference between oviviparity, oviparity and viviparity?

Calculate the acceleration of the system (in terms of the acceleration due to gravity, g, when it is released.
Options
A) 0.38g

B) 0.13g
C) 0.15g

D) 0.39g

A magnified and virtual image of a near object is produced by
A. prism binoculas
B. astronomical telescope
C. periscope
D. simple microscope

Vitamin17:
M =v =2/2=1

In the microscope, the eyepiece lens merely acts as?
A. an inverter
B. a refiner
C. a diminisher
D. a magnifier

Vitamin17:
M =v =2/2=1

Nice one bro

The magnification of an object 2cm tall when placed 10cm in front of a plane mirror is
Options
A) 6.0

B) 1.0

C) 0.7

D) 0.6

Vitamin17:
B is correct...though most sex linked genes are located on the X, that's why males are susceptible to X linked diseases

Hermophroditic reproduction can be found among the
A. Arthropods and nematodes
B. Pisces and amphibians
C. Annelids and molluscs
D. coelenterates and platyhelminthes

Vitamin17:
A

Sex - linked genes are located on
A. Y - chromosomes
B. X - and Y - chromosomes
C. homologous chromosome
D. X - chromosome

The most common characteristic of the fungal hyphae is the possession of
A. cell-like compartment with one nucleus each B. cell walls that are both rigid and chitinous C. a multicellular mycelium in the substrate D. cell-like partitions formed by cross-walls

someone should help here

Gemineye:
D

Why's it D?

Gemineye:
D

In the evolutionary trend, in which phylum do we begin to see a complete digest tract?
Options
A) ctenophora
B) Platyhelminthes
C) nematoda
D) mollusca

Vitamin17:
Yes but he said he does not have them anymore...

bro... you'll have to search for a bigger bookshop lamlad is not that scares na

Vitamin17:
please does anyone know where I can get lamlad textbooks for chemistry, physics and biology or explicit biology, i have searched all book stores in Owerri but is not available there... thanks

Do you mind PDF?..if not check this thread from the beginning and message Harrison.

Incandescent:
Wetin i do?

no vex bro

awesomedammy:
Moon is not self luminous

how?...I thought moon is non luminous itself...lighted candle should be the ans na

In the evolutionary trend, in which phylum do we begin to see a complete digest tract?

Options

A) ctenophora

B) Platyhelminthes

C) nematoda

D) mollusca

Which of the following is not present in RNA?
Options
A) Adenine
B) Guanine
C) Cytosine
D) Thymine

These also

Which of the following is not self-luminous?
A. Incandescent electric bulb
B. Incandescent fluorescent tube
C. Lighted candle
D. The moon
E. The sun

A slight loading of a tuning fork has the effect of
A. decreasing its amplitude
B. increasing its amplitude
C. decreasing its frequency
D. increasing its frequency

Gemineye:
D

yeah climax Is actually correct

oyetunjibaba:
Gill slit....D

They choose eyes here oo...dats y I'm confused

oyetunjibaba:
Gill slit....D

They choose eyes here oo...dats y I'm confused

Jiberi:
Answer is A. Reason :Since the woman is Rh negative, the baby could be Rhesus + or Rhesus -, if the baby becomes the former(Rhesus +), Hemolytic disease of newborn or Erythroblastosis fetalis may occur(The complications occur if mother is Rhesus negative and baby is Rhesus positive)

ooh... Thank you sir

Genetic counselling is important when a marriage is planned between a
A. Rh- woman and Rh man+
B. Rh- woman and Rh- man
C. Rh+ woman and Rh+ man
D. Rh+ woman and Rh- man

guys help me with those questions above

Genetic counselling is important when a marriage is planned between a
A. Rh- woman and Rh man+
B. Rh- woman and Rh- man
C. Rh+ woman and Rh+ man
D. Rh+ woman and Rh- man

guys help me with those questions above

The community of plants in which the same species occur from year to year is the

A. annual species

B. pioneer vegetation

C. perennial species

D. climax vegetation

The carnassial teeth of a carnivorous animal consist of the
A. last upper premolar and the first lower molar
B. last upper molar and the last lower molar
C. first upper premolar and the lower molar
D. first upper molar and the first lower molar