Correct Answer: C. contain a lot of oaths

Correct Answer: D. Dothan

Correct Answer: B. Smart card

Correct Answer: A. 50Hz

Correct Answer: D. for

Correct Answer: A. inactivity

Correct Answer:

Explanation

(a) Definition of tropic and nastic movements:

(i) Tropic movement is growth movement of plant organs in response to external unilateral or directional stimulus. Nastic movement is the movement of certain parts of plants in response to diffuse or non-directional stimulus.

(ii)

Experiment to show that auxins are produced in the apical cells of a shoot:

Aim:To show that auxins are produced in the apical cells of a shoot.

Material: 3 potted seedlings of maize labelled A, B and C; agar block, sharp knife/cutting instruments, mica sheet / aluminium foil/cover slip.

Methods:

(i) Cut tip of coleoptile/shoot in Ato serve as control

(ii) Leave decapitated shoot for about 48 hours

(iii) Select another potted seedling, B,.and cut off tip of coleoptile/shoot

(iv) Place the cut tip on an agar block for about 2 — 6 hours

(v) Place agar block on stump of the decapitated shoot and leave for about 48 hours

(vi) Select a third seedling, C, and cut off tip of the coleoptile

(vii) Place tip of the cut coleoptile on mica sheet for 2 — 6 hours

(viii)Place mica sheet on cut surface of decapitated shoot and leave for about 48 hours.

Observation: Growth ceased in decapitated shoot A, but when agar block was placed on stump of shoot B in which growth had stopped, growth resumed. When mica sheet was placed on stump of shoot C in which growth had stopped, growth did not take place (resume).

Conclusion: This shows that a chemical substance (auxin) produced at the tip, i.e., apical cell of the shoot is responsible for the growth of the shoot.

(c)(i) Names of plant hormones other than auxins are

• Gibberellic acid / Gibberellin
• 2, 4 - D 2, 4 - Dichlorophenozy acid
• cytokinis/kinins/kinetin
• abscisic acid/abscisin
• ethylene/ethene
• traumatin
• florigen
• dormin
• formin, etc.

(ii) Examples of tropisms are:

• geotropism
• hydrotropism
• thigmotropism/Haptrodropism
• photoropism
• stereotropism
• chemotropism
• thermotropism.

Correct Answer: B. changing the form of goods, moving and making them avaiable as needed

Correct Answer: B) tools

Explanation

Keke Senior High School,

Low Cost Housing Estate,

Ifako ljaiye

Lagos State.

20th July, 2012.

Dear Father,

Your letter dated 22nd of May, 2012 came to my school at the appropriate time. My inability to reply to the letter on time is due to the fact that the time of its arrival coincided with the commencement of my West African Examinations Council Schools Certificate Examination (WASSCE) for May/June 2012 Nevertheless, I decided to reply to the letter at the end of the exams.

Daddy, having spent about six weeks in this school and having followed closely the trend of events and academic records of the school, I feel the solemn urge to let you know my experiences so far in the school.

First, the administrative set up of the school is no doubt second to none This has brought about a conducive academic atmosphere between the teaching staff and the students. The introduction of the Students Representative Council in my first week in the school has contributed in no small measure to the unparalleled cooperation between the various organs of the school. This has brought about a peaceful environment, devoid of the usual wrangling and needless agitations that characterized the administrative set up of my former school.

Furthermore, the school's tone and standard of discipline is very high. The teachers are epitome of discipline and hard work. Hence. lazy students are compelled to ship in or ship out. They come to school very early. do all that was expected of them with minimal supervision and during school's hour. Apart from the break time. the silence enveloping the school can be compared to that of the grave yard. This disciplinary tone of the school coupled with the students academic performance make her the cynosure of all eyes.

In addition to this, the co-curricular activities of the school are beautifully planned and implemented. Every student is compelled to be a member of at least one society or club. Each society or club is coordinated by a teacher and officers elected among the students. This has created a sense of duty and belonging among the students and between the officers and the coordinating teacher. Hence. each society or club is given specific date to present its social and academic activities to the students at a general assembly specially called for that purpose. This has brought about a spirit of cooperation and togetherness in the students.

Daddy, I am very happy to inform you that my coming to this school is a blessing in disguise. The reasons are too many to be written in this letter but it is very important to tell you that my academic attitude has changed. Here, in the area of academics. it is the survival of the fittest, hence all hands must be on deck all the time. In my school one has little or no time for unproductive activities.

Lastly. daddy. I want to thank you for granting me the permission to change to this school. It is not a fruitless effort. Extend my warmest regards to the rest of the family Till we meet at the end of the third term.

Yours sincerely.

Adejoke.